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Difference between ado.net data set and ADO Record set
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ramakrishnag1982- Member Since Nov-2006 | Aug 12th, 2007
1) A DataSet can represent an entire relational database in memory, complete with tables, relations, and views, A Recordset can not.
2) A DataSet is designed to work without any continuing connection to the original data source; Recordset maintains the contentious connection with the original data source.
3) There's no concept of cursor types in a DataSet, They are bulk loaded, while Recordset work with cursors and they are loaded on demand.
4) DataSets have no current record pointer, you can use For Each loops to move through the data. Recordsets have pointers to move through them.Kishore
- Jan 24th, 2013
Please need some more related information about the each topic..It is not sufficient to answer in Interviews.
sathin
- Oct 29th, 2009
To get the data from a database and put it on a data control In ADO they used recordset In ADO.Net they used dataset Record set is a connection oriented architecture whereas dataset supports a c...
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What are the steps to connect to a database?
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nishant2200- Member Since Jan-2007 | Jan 7th, 2007
1. Create a connection. This requires a connection string, which can be given declaratively or put in a well defined place like the .config files. Advantage of keeping in .config files is that it enables use of Connection Pooling by .Net framework, else even one small change in connection string will cause CLR to think it's not the same connection and will instantiate new connection for other request.
2. Open the connection and keep it open until done, typically done as using (con) { //use }
3. If using connected data model, create a SqlCommand object, decorate it with desired command, command type (stored procedure for eg), add any parameters and their values to the command, and then consume the command by using ExcuteReader or ExecuteScalar. In case of ExecuteReader, we will get back a handle to a fast-forward, read only pointer to the recordset. We can also decorate Command object with multiple recordsets in 2.0 and execute one by one (MARS - Multiple Active Record Sets)
4. If using disconnected data model, create a DataAdapter object, decorate it with desired SELECT, INSERT, UPDATE, DELETE commands, add parameters as necessary and then fill up a DataSet or DataTable using the DataAdapter. Subsequent SQL can be executed using insert, update, delete commands on the dataset.
ushalakshmi
- Apr 17th, 2008
TO Connect to a DatabaseFirst we need to have a namespace like System.Data.Sqlclientthen connect to database as follows1.Create connection using SqlConnection Sqlconnection con=new sqlconnection(...
johnjustin
- Apr 8th, 2008
1. Implements the base class for data access2. Create a connection3. Open that connection4. Create a data reader and execute the data reader with proper sql statements You can get the values of the record using the methods GetString, GetInt32 ....etc.
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How do you update a Dataset in ADO.Net and How do you update database through Dataset
brajesh gautam
- Feb 6th, 2012
In ADO.Net if you use the disconnect mode then local copy are already update but if we want to update a database type this program in visual studio sqlconncection = new sqlconection (" connection str...
lata negi
- Nov 4th, 2011
Code- SqlConnection conn = new SqlConnection("Server=__; DataBase=__; UID: __; Password: __");
- DataAdapter da;
- DataSet ds = new DataSet();
- da = new SqlDataAdapter("select * from employee", conn);
- ds = da.fill(ds);
- GridView.DataSource=ds;
- GridView.DataBind();
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Where query string is stored
jnaneswarisd
- Jun 9th, 2009
A query string is the part of a Uniform Resource Locator (URL) that contains data to be passed to web applications.
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How can we load multiple tables in to Dataset?
TheDentist
- Apr 23rd, 2013
I know the DataAdapter provides this functionality but I prefer to create a SQL Statement that performs the merge and creates a single DataSet. The servers are usually high powered machines so by let...
Varung5
- Jun 15th, 2010
You can pass multiple select statements in data adapter separated by “;”.SqlDataAdapter dataAdapter = new SqlDataAdapter(“select * from table1;select * from table2”, connection);DataSet ds = new DataSet();dataAdapter.Fill(ds);
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What is the difference between data reader & data set
Pendurti
- Sep 15th, 2008
Data ReaderThis is Connection oriented and can read only one record at a time. It has got no capability of reading multiple tables at a time. This needs a live connection all the time. Data SetTh...
sureshnaspuri
- Jul 10th, 2008
data reader:1.It uses the connected architecture.2.It can be used as Read n forward only3.Updations are not possible4.It fectches only one record at a time.5.It is faster compare to data set.Data Set:...
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why edit is not possible in repeater??
amitdotchauhan
- Jun 15th, 2010
Repeater itself a presentation control, not the data editing control.Repeater still can support a multiple records updates which i have done to support some client requirements.Basically its not the b...
Varung5
- Jun 15th, 2010
Repeater control does not have default selecting and editing support. This control is just to read and display the information. This control has better performance. But if you want to enable the editi...
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difference between SqlCommand and SqlCommandBuilder
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sahu- Member Since Dec-2005 | Mar 29th, 2007
Hi All,
Ans:
a) SQLCommand is used to execute all kind of SQL queries like DML(Insert, update,Delete) & DDL like(Create table, drop table etc)
b)SQLCommandBuilder object is used to build & execute SQL (DML) queries like select, insert, update & delete.
Lijo
- Nov 10th, 2011
SqlCommand: SqlCommand is used to execute Query involving Select, Update, Delete operation and to Execute SQL Stored procedures SqlCommandBuilder: SqlCommandBuilder provides the feature of refl...
abhi_la2006
- Jul 13th, 2011
Sql command use to only execute dml like update delete insert but sql command builder use the dml as well as the ddl like create database alter etc.
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how many records can take clustured index in sql server
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vvijaychandra- Jun 22nd, 2006
a clustered index is a special type of index that reorders the way the records in the table are physically stored . therefore the table can have only one clustered index.
Pendurti
- Sep 15th, 2008
FYI..Clustered index is something that deals with the columns but not the records.These define the physical sorting of the rows in the database in the storage media.A database table can have utmost on...
ushalakshmi
- Apr 17th, 2008
A clustered index is a special type of index that reorders the way records in the table are physically stored. Clustered index is created by default when we create a primary key on a column.Everyone k...
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What method should the key class of hashmap override
Vivek
- Feb 10th, 2006
The methods to over ride are equals() and hashCode().
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A single line comments are implemented by
A) �B) //C) /*D) !�
Prabir Sarkar
- Jan 4th, 2006
//
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Is it possible to Override Private Virtual methods
A) YesB) NoC) Either A or BD) None
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How can you sort the elements of the array in descending order
A) Sort methodsB) Reverse methodsC) By calling Sort and then Reverse methodsD) Can�t sort in descending
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Answered by: Prakhar
- Apr 12th, 2006
int[] arr = new int[3];
arr[0] = 4;
arr[1] = 1;
arr[2] = 5;Array.Sort(arr);
Array.Reverse(arr);rfb99
- Dec 16th, 2011
It is far more elegant and efficient to do something like
Array.Sort(arr, delegate(int x, int y) { return y.CompareTo(x); }); -
What is the order of destructors called in a polymorphism hierarchy
A) Starts with derived class ends at base classB) Starts with base class ends at derived classC) The destructor of base can not becalledD) RandomlyExplanation: Uses Bottomup approach while calling Destructors from derived class
vshylaja
- Apr 7th, 2008
I believe "Sahu" is intentionally posting wrong answers to questions, in order to mislead others. Otherwise how could he be consistently getting the answers wrong almost always!!
samiksc
- Jan 10th, 2006
Answer (A) is correct. Destructors are called in reverse order of constructors. First destructor of most derived class is called followed by its parent's destructor and so on till the topmost class in...
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In C# a technique used to stream the data is known as
A) WadingB) SerializationC) CrunchingD) Marshalling
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In the following cases which is not function overloading
A) Same parameter types but different return valuesB) Varying number of parametersC) Different parameters types but different return valuesD) Different parameters type but same return values
Sreerenj
- Mar 18th, 2006
Answer is A) Same parameter types but different return values.Function overloading depends on the 1) parameter types 2) number of parameters 3) order of parameters
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What is an indexer in C#
A) Special syntax for overloading [ ] operator for a classB) One which speeds up the function callC) None of the above
sahu
- Jan 10th, 2006
Ans:Answer: A) Special syntax for overloading [ ] operator for a classB) One which speeds up the function callC) None of the above
samiksc
- Jan 10th, 2006
(A) Indexer is a special syntax for overloading [] operator for a class. After defining an indexer, array syntaxes can be used for the class objects.
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The C# keyword int maps to which .NET type
A) System.Int16B) System.Int32C) System.Int64
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Windows services created by C# app run only
A) Windows 95B) Windows 98C) Windows NT & Above
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How do you import Activex component in to .NET
A) With AXImp.exeB) With Pinvoke.exeC) With Tlbimp.exe
naveentej
- Jan 7th, 2006
An application called AXImp.exe shipped with .Net SDK is used.This application does something similar as Tlbimp.exe does for non graphical COM components.It creates a wrapper component that contains the type information that the .Net runtime can understand.
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Which class use to Read/Write data to memory
A) FileStreamB) NetworkStreamC) MemoryStream
naveentej
- Jan 7th, 2006
Ans: MemoryStreamIt is a nonbuffered stream whose encapsulated data is directly accessible in memory(RAM not files on disk).
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Which of the following has stream as the base class
A) Buffered StreamB) MemoryStreamC) FileStream
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Stream object can not be initialized
A) TrueB) FalseExplanation: Stream is an abstract class ie it is the representation of bytes
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Public policy applies to
A) Shared assembliesB) Private assembliesC) Both
Akash Anand
- Mar 31st, 2006
Public policies are applied on Shared Assemblies.
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A shared assembly must have a strong name to uniquely identify the assembly
A) TrueB) False
Biswa Prakash Rath
- Feb 28th, 2006
Answer: A) TrueA shared assembly must have a strong name to uniquely identify the assembly. The strong key is created by using the commandsn -k assemblyname.snk
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What is the extension of a resource file
A) .csB) .rsxC) .resx
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Which utility is used to create resource file
A) regasmB) resgenC) regsvrExplanation: Resgen.exe is used to create resource files in C#.net
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In a multilevel hierarchy how are the constructors are called
A) TopDownB) BottomUpC) None
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How do you make a class not instantiable
A) Making class as AbstractB) Having a Private constructorC) Making the class sealedD) Both A & B
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Which attribute you generally find on top of main method
A) [assembly]B) [ STA ]C) [ STAThread ]
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How do you refer parent classes in C#
A) SuperB) ThisC) Base
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Application Isolation is assured using
A) ThreadsB) RemotingC) ApplicationDomain
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Assemblies cannot be loaded side by side
A) TrueB) FalseExplanation: Assemblies can be loaded side by side
xingoflife
- Jun 24th, 2007
True.Assemblies can be loaded side by side. Different versions of same assemble can be used inside a single process.Source: Professional C # 2005. Wrox edition
toyash
- Mar 23rd, 2006
Ans : FalseThe question is " Assemblies cannot be loaded side by side " This mean its false .. you can load assemblies side by side.
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How do you add objects to hashtable
A) With Add methodB) With insert MethodC) With = operator
Kal_CSharp
- Jan 16th, 2008
See the example here:Hashtable ht = new Hashtable(); ht.Add(0, "Kals");ht.Add(1, "Kal"); (or)ht[0] = "ABC"; ht[1] = "XYZ";
Ashish
- Feb 5th, 2007
Object in the Hash table can be add with the add method as well as with "=" also.Hashtable h =new Hash Table()h.add(Key,Value)orh(Key)=valueThanks
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What is the output of Vectors.RemoveAt(1)
A) Removes the object whose key is 1B) Removes the object whose value is 1C) Removes the object at position 1
Kal_CSharp
- Jan 16th, 2008
Correct Answer: CRemoves the object at postion 1. Vectors.RemoveAt(int index); Default index value is 0. If the default value is not changed for it, it removes the second element from the collection.
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It is not possible for a delegate to wrap more than 1 method
A) True B) False
twborn88888
- Jul 8th, 2011
False; It can be MultiCast delegate.See the example code:http://msdn.microsoft.com/en-us/library/ms173175(v=vs.80).aspx
Anilkumar Lella
- May 20th, 2011
Delegate are used to refer one or more methods.If delegate refers only one method then it is called singlecast delegate.if delegate refers two or more methods then it is called multicast delegate.
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What happens when a C# project has more than 1 Main methods
A) Compiler throws warning messageB) Compiler throws Error messageC) Compiler successfully compiles
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Which of the following explicit type conversion is achieved with out loosing the original data value
A) Byte to LongB) Long to ByteC) Float to intExplanation: Byte stores up to 255 which can easily be stored in a long variable
naveentej
- Jan 8th, 2006
Ans: AThe author's explanation is perfectOptions B and C are utterly opposite
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Which of these operator has the Highest Precedence
A) ( )B) &&C) | |
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How do you determine the size required by a Value type on the stack
A) Length operatorB) Sizeof operatorC) Mem operator
LordAlex
- Nov 7th, 2011
B) sizeof operator for integral types only (byte,...,int ,,)
For other use
System.Runtime.InteropServices.Marshal.SizeOf(...); -
How do you check whether an Object is compatible with Specific Type
A) Is OperatorB) Like OperatorC) Compare operator
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How do you make CLR enforce overflow checking
A) Using Checked KeywordB) Using Unchecked KeywordC) With Try Catch
naveentej
- Jan 8th, 2006
Ans: A, Using Checked keyword we can enforce arithmetic overflow check within the specified code block.This option is used when we set the Arithmetic Overflow Check to false for the entire application...
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X=X+1 is equivalent to
A) X++B) X+=1C) Both A & B
samiksc
- Jul 11th, 2007
X=x+1 is equivalent to x+=1 except that value of x is evaluated only once.x=x+1 is not equal to x++ (not always equal as mentioned in one of the earlier comments). If x++ is a standalone statement, the two have equal effect.
dotnetrocks
- Jun 21st, 2006
Performance wise both the approaches are similiar. BUt consider this statement. suppose some object obj has a variable in it as i. then, obj.1 = obj.i + 1In this case at the MSIL level u can see 2 dif...
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If we need to compare X to a value 3 how do we do it in C#
A) If (X==3)B) If (X=3)C) If (X.equals(3) )
Aby Kurian
- Jan 29th, 2007
If x is an integer then
if (x==3){your code}
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Which operator is used for TypeCasting
A) [ ]B) ( )C) TypeOf
Logan
- Mar 26th, 2015
B
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Array declaration in C# is done with
A) [ ]B) {}C) ( )
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How to get the capacity of an array in C#
A) Count PropertyB) Length PropertyC) Ubound method
abhi.uno
- Mar 17th, 2010
".Length" for total no elements in all dimensions.".getlength(int x)" gets total elements in dimension x(int)
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Which of the following is wrong with regards to Out keyword
A) For Out parameters a variable can be passed which has not initializedB) If Out parameters are not assigned a value with in the function body compiler throws errorC) The variable passed as a Out parameter must be static
Sanjida123
- Jun 4th, 2010
Let's see what is out? Out is a keyword used to fill value to the parameter named as out.A) For Out parameters a variable can be passed which has not initialized - TrueWe can pass an uninitializ...
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Which modifiers hides an inherited method with same signature
A) NewB) VirtualC) SealedExplanation: New hides the inherited method which was overridden by base class
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For Each statement implicitly implements which interface
A) IEnumerableB) IcomparerC) NoneExplanation: All iterators implements Ienumerable
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The condition for If statement in C# is enclosed with in
A) ( )B) { }C) [ ]
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Which of the escape sequence is used for Backspace
A) oB) aC) b
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Which of the member is not a member of Object
A) Equals ( )B) GetType ( )C) ToString ( )D) Parse( )
sasidhar16
- May 30th, 2011
Parse() is not the member of Object, GetHashCode() is the fourth method apart from A,B,C method options given in question
dreammunna
- May 2nd, 2006
Hi Followings are the member of System.ObjectEquals()GetHashCode()GetType()Object()ReferenceEqualsToString
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Which statement is invalid with regards to Constant
A) They must be initialized when they are declaredB) The value of the constant must be computable at compile timeC) Constants are not staticD) Constant is a variable whose value can be changed through out it�s life time when it is static.
Elean0r
- May 25th, 2011
Statement D is definitely invalid. Statement C occupies a grey area, since:a) a const field will have the same value in each object of that class; so it appears to have same effect as a static reado...
levteck
- Aug 16th, 2010
Straight out of MSDN:"The static modifier is not allowed in a constant declaration."The invalid statement is d)
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Instantiating a reference object requires the use of
A) New keywordB) = OperatorC) Set keyword
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What happens if we refer a variable which in not initialized in C#
A) Compiler throws warning messageB) Compiler throws error messageC) Compiles the application with out any problemExplanation: Variable needs to be initialized before use
John Jiang
- Jul 4th, 2008
There is no veriable in a class only fields or properties. when we say variables that means they are in a method. so it will throw a error!!!
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What does Main method returns in C#
A) StringB) IntegerC) FloatExplanation: Main returns either Nothing or int
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Which of the following application need not to have an entry point
A) Console applicationB) Windows applicationC) Class ModulesExplanation: Class modules are referred by another project which will have entry point.
Ravi Kumar
- Mar 12th, 2006
Assemblies may or may not be executables.exe or dllclass modules had no entry pont.entry point means public void static main() method
samiksc
- Jan 10th, 2006
(C) Class modules is the correct choice. Console applications and windows applications do require entry point, i.e. Main() method.Class modules are compiled into DLLs which are referred by other applications. They do not have an entry point.
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Which of the following keyword is used along with Main function in C#
A) VirtualB) StaticC) InheritsExplanation: Main functions are always static as it runs with out any instance
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What are Namespaces
A) Naming convention used in .NetB) Group of classes categorized to avoid name clashC) None of the above
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.NET run time relies on the object reference counts to manage memory
A) TrueB) FalseExplanation: .Net run time relies on Garbage Collection to manage memory
vshylaja
- Apr 7th, 2008
One of the primary design goals of .NET is to overcome problems associated reference counting and orphaned objects etc that were prevalent in the COM world. .NET framework instead uses reference tracking for garbage collector to reclaim memory from unused objects.
samiksc
- Jan 10th, 2006
(B) False is the correct choice. .net runtime relies on reference tree and generations algorithm and does not rely on reference counts.
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Which is .NET s answer to Memory Management
A) ReflectionB) Common Type SystemC) GarbageCollection
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Which of the following is not a subclass of reference type
A) EnumerationsB) DelegatesC) ArraysExplanation: Enumerations are of Value Type
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Which of the following is not a subclass of Value Type class
A) EnumerationsB) User defined value typesC) Boxed value typesExplanation: Boxed value types are of reference types
vshylaja
- Apr 7th, 2008
Boxed types are those types that have been converted from being a value type to a reference type. So once they are boxed, they cease to be a value type and become a reference type instead.Answer is C.
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It is not possible to debug the classes written in other .Net languages in a C# project.
A) TrueB) FalseExplanation: It is possible to debug the code as all are adhering to CTS & CLS
Vinod
- Mar 8th, 2006
May i assume that results by sisira is wrong always?
samiksc
- Jan 10th, 2006
Answer is (B) False: It is definitely possible to debug other .Net languages code in a C# project. As everyone knows .net can combine code written in several .net languages into one single assembly. Same is true with debugging.
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Code written in C# can not used in which of the languages
A) J#B) Managed C++C) Vb.NetD) JavaExplanation: Java is not targeted to run under CLR
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.NET interfaces are not derived from IUnknown & they do not have associated GUID�s
A) TrueB) FalseExplanation: Only COM interfaces are derived from Iunknown and they do have GUIDs
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Which are the important features of IL
A) Use of attributesB) Strong data typingC) Object orientation & use of interfaceD) All of the above
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Intermediate Language also facilitates language interoperability
A) TrueB) FalseExplanation: AS the managed code is bound to CTS & CLS it is language interoperable
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Platform specific code is obtained when
A) source code is compiled to get MSILB) when MSIL is compiled by CLRC) Both of the aboveExplanation: When CLR compiles the managed it generates the native code which is compatible to platform.
binodgupta
- Jan 27th, 2007
(B) Is correct. MSIL is platform independent code whereas JIT compiled code is platform dependent code.
samiksc
- Jan 10th, 2006
Answer (B) is correct. MSIL code is the intermediate code which is platform independent.When MSIL is compiled actual platform dependent code is generated.
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Code running under the control of CLR is often referred as
A) Source CodeB) Managed CodeC) Unmanaged CodeExplanation: Source code is compiled to MSIL, which is generally known as managed code
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What is the difference between stored procedures and stored functions in ORACLE?
qptopm
- Jul 22nd, 2016
Functions have a scalar return value. Procedures do not have a return value.
A Stored procedure may have arguments that are IN, OUT, or INOUT. Functions may only have IN arguments.Prasanjeet Das
- May 9th, 2012
SP 1-It is a subprogram that perform an action. 2-It does not contain any return clause. 3-Can return none,one or many values. 4-Can contain a return statement. SF 1-Invoke as a part of expression....
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How do you add ASP.Net 3rd party component
Skill/Topic: AdvancedA) By add/Remove items in the project menuB) Add reference of dll file and place the code where ever requiredC) Cannot add 3rd party component to asp.net
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When is the user controls code is executed
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Which method displays the custom control
Skill/Topic: AdvancedA) The PrerenderB) RenderC) Page_LoadD) Display
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What is the significance of Response.AddHeaders( )
Skill/Topic: AdvancedA) Adds HTTP Headers to output streamB) Adds Tag to rendered PageC) Add Headers to the web site
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Whats is the significance of Response.ClearHeaders( )
Skill/Topic: AdvancedA) Clears all Headers from the buffer streamB) Clears all the section value from rendered HTML FileC) Clears the content of the Rendered pageD) None of the above
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Which of the following are not a member of Server Object
Skill/Topic: AdvancedA) ExecuteB) TransferC) OpenD) HTMLDecode
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Whats the significance of Request.MapPath( )
Skill/Topic: AdvancedA) Maps the specified virtual path to a physical pathB) Maps the specified absolute path to virtual pathC) None
aparna
- Mar 25th, 2006
A) Maps the specified virtual path to a physical path
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What is the out put of the following codebyte a=200;byte b=100;byte c=a+b;Response.Write ( C );
Skill/Topic: AdvancedA) 300B) Compile Time errorC) Run time ErrorD) Just prints �C�
Mounika
- Jul 10th, 2023
Compile time error
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Select the output of the statement < form method=post action=�test.aspx� >
Skill/Topic: AdvancedA) Transfers all the form data to test.aspx with HTTP headersB) Transfers all the form data to test.aspx with out HTTP headersC) Calls post method on test.aspxD) None of the above
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What data types do a Rangevalidator supports
Skill/Topic: AdvancedA) IntegerB) StringC) DateD) All of the above
aparna
- Mar 25th, 2006
d) All of the above
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What is the lifespan for items stored in viewstate
Skill/Topic: AdvancedA) Exists for the Life of the current pageB) 20 minsC) 2 minsD) 2 sec
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What is a diffgram ?
Skill/Topic: AdvancedA) The one which renders the dataset object contents to XMLB) Finds the difference in two objectsC) Finds the difference in two filesD) None of the above
shaik
- Sep 15th, 2006
When sending and retrieving a DataSet from an XML Web service, the DiffGram format is implicitly used. Additionally, when loading the contents of a DataSet from XML using the ReadXml method, or when w...
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Why is Global.asax is used for ?
Skill/Topic: AdvancedA) To implement application & Session level eventsB) To store configuration informationC) To store styling informationD) None of the above
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Is it possible edit data in a repeater control
Skill/Topic: AdvancedA) NoB) Yes
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What is the purpose of Reflection?
Skill/Topic: AdvancedA) For Reading metadata at runtimeB) For knowing version of assemblyC) For finding path of an assembly
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What is a strong name?
Skill/Topic: AdvancedA) Public KeyB) Private KeyC) Combination Of both Public,Private key and digital signature
Ants
- Oct 12th, 2006
A strong name consists of the assembly's identity ? it's simple text name, version number, and culture information (if provided) ? plus a public key and a digital signature
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Which of the following extension does a webservice file will have
Skill/Topic: AdvancedA) .AsmxB) .AspxC) .AscxD) .Resx
NAVIDDYA
- Feb 27th, 2019
.asmx
Tanuja Jaiswal
- Feb 15th, 2012
Web services in Asp.net are identified on files with the .asmx file extention.
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Which Language can Support SOAP
Skill/Topic: AdvancedA) VBB) JAVAC) COBOLD) All of the above
shakoor
- Jan 7th, 2016
B) Java
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What is the difference between Server.Transfer & Response.Redirect
Skill/Topic: AdvancedA) No DifferenceB) Server.Transfer needs a roundtrip, Response.Redirect does notC) Response.Redirect needs roundtrip, Server.Transfer does notD) Server.Transfer can transfer user between 2 applicaions
krishan_mahesh
- Nov 27th, 2007
Response.Redirect needs roundtrip, Server.Transfer does notResponse.Redirect is out-of-context whereas Server.Transfer is in-context.Examples:Response.Redirect www . ggogle . comServer.Transfer "..YourApplicationParticularWebPage.aspx"
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Is it Possible to Serialize HashTable with XMLSerializer
Skill/Topic: AdvancedA) YesB) No
balajifortest
- Oct 26th, 2006
Hai,It is not possible to seralize class implements IDictionary interface using XMLSerailzer that is only main restriction for it(XMLSerailzer) where it does not apply for SOAPFormatters/BinaryFormatters.
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Which of the following is not a member of ConnectionObject
Skill/Topic: AdvancedA) BeginTransactionB) EndTransactionC) ExecuteD) Open
aparna
- Mar 25th, 2006
option C:EXECUTEits the duty of command
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How do we Delete, Update, Select data in a Dataset
Skill/Topic: AdvancedA) Using SQLDataAdapterB) Using SQLDataReaderC) Using SQLCommandD) None
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Select the Interface which provides Fast, connected forward-only access to data
Skill/Topic: AdvancedA) IdataRecordB) IdatabaseC) IdataReaderD) Irecorder
aparna
- Mar 25th, 2006
option C:IDATAREADERsince its a read-only stream of data from the datasource
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Which objects is used to create foreign key between tables?
Skill/Topic: AdvancedA) DataRelationB) DataRelationshipC) DataConstraintD) Datakey
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What is the advantage of Disconnected mode of ADO.Net in ASP.Net
Skill/Topic: AdvancedA) Automatically dump data at client PCB) Not necessary to connect with serverC) user data can update and retrieve in dataset and when connection connected, update values with serverD) All of the above
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How to open more than one datareader at a time
Skill/Topic: AdvancedA) Use different datareader variableB) Use different datareader and connection variableC) Can not be done
likitha
- Aug 21st, 2019
Use different datareader variable
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Which method do you invoke on the DataAdapter control to load your generated dataset with data?
Skill/Topic: AdvancedA) LoadB) FillC) GetAllD) None
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Which of the following is not a member of ADODBCommand object
Skill/Topic: AdvancedA) ExecuteReaderB) ExecuteScalarC) ExecuteStreamD) OpenE) CommandText
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The object used by SQL connection to make Security Demands
Skill/Topic: AdvancedA) SQLLCientAttributeB) SQLPermissionC) SQLPermissionClientD) SQLClientPermission
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Whch of the following is not a member of Response Object?
Skill/Topic: AdvancedA) ClearB) WriteC) ExecuteD) Flush
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What is a satallite assembly ?
Skill/Topic: IntermediateA) Any DLL file used by an EXE file.B) An Assembly containing localized resources for another assemblyC) None of the above
ak99372
- Jan 8th, 2007
It's called sattelite assemblies!Why is there so many mistake in these tests? And not even mispelling. Sometimes Answers are completly wrong. How do you want to test someone if you don't know the answer?
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What is the purpose of code behind ?
Skill/Topic: IntermediateA) To separate different sections of a page in to different filesB) To merge HTML layout and code in to One fileC) To separate HTML Layout and code to different fileD) To ignore HTML usage
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Where do you store the information about the user locale
Skill/Topic: IntermediateA) System.userB) System.webC) System.DrawingD) System.Web.UI.Page.Culture
aparna
- Mar 25th, 2006
Option D: SYSTEM.WEB.UI.PAGE.CULTURE
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Which control supports paging
Skill/Topic: IntermediateA) RepeaterB) DatagridC) BothD) None
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What does Response.End will do?
Skill/Topic: IntermediateA) It will stop the server processB) It will stop the client processC) None of the above
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Why do we use XMLSerializer class
Skill/Topic: IntermediateA) RemotingB) WebServicesC) Xml documentary Files
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How do you explicitly kill a user�s session ?
Skill/Topic: IntermediateA) Session.Close ( )B) Session.Discard ( )C) Session.AbandonD) Session.End
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What is the maximum number of cookies that can be allowed to a web site
Skill/Topic: IntermediateA) 1B) 10C) 20D) 30E) More than 30
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Which of the following is not a valid state management tool?
Skill/Topic: IntermediateA) Application StateB) Hidden Form FieldC) QuerystateD) Cookies
manceelee
- Feb 10th, 2016
These are ASP.NET state management: should be query string instead of QueryState
View state
Control state
Hidden fields
Cookies
Query strings
Application state
Session state
Profile Propertiessantosh
- Jan 1st, 2016
C) Querystate
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What is the default authentication mode for IIS
Skill/Topic: IntermediateA) WindowsB) AnonymousC) Basic AuthenticationD) None
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Session Object classes are defined in which of the following namespace?
Skill/Topic: IntermediateA) System.Web.UIB) System.Web.SessionStateC) System.Web
shashikant mokashi
- Sep 24th, 2012
B) System.Web.SessionState
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Web Controls Supports CSS
Skill/Topic: IntermediateA) TrueB) False
Nishant Mittal
- Sep 1st, 2012
True
Tanuja Jaiswal
- Feb 15th, 2012
A) true
CSS means Cascading Style Sheets
eg. if we want to set color of a label control we can use CSS styles directly in our control tag. -
Does the �EnableViewState� allows the page to save the users input on a form
Skill/Topic: IntermediateA) YesB) No
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Select the type Processing model that asp.net simulate
Skill/Topic: IntermediateA) Event-drivenB) StaticC) LinearD) TopDown
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Who can access Session state variables
Skill/Topic: IntermediateA) All Users of an applicationB) A Single sessionC) All users within a single tunnel
Cliff
- Jul 24th, 2013
The answer would be B) as only the user that created the "single session" can access his/her own session. Whereas ALL users can access application state.
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How do you turn off the Session state for a webform ?
Skill/Topic: IntermediateA) In Web.config file set the tag to TrueB) In Web.config file set the tag to falseC) Set the Session state to false in webform properties windowD) Set the EnableSession state to false in webform properties window
RAMYA
- Mar 1st, 2016
EnableSessionState="false" in the @ Page directive. for setting the session false at a Page Level
At the Application Level-
In Solution Explorer, double-click Web.config to view the contents of this file.
Locate the section, and set the mode value to Off.
so the answer is D) -
How do you trace the application_End event on runtime?
Skill/Topic: IntermediateA) By DebuggingB) By TracingC) Can not be done
cchang
- Sep 25th, 2006
What is the correct answer
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Select the validation control used for �PatternMatching�
Skill/Topic: IntermediateA) FieldValidatorB) RegularExpressionValidatorC) RangeValidatorD) PatternValidator
sumalatha
- Apr 3rd, 2006
RegularExpressionValidator
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How do you disable client side validation ?
Skill/Topic: IntermediateA) Set the language property to C#B) Set the Runat property to serverC) Set the ClientTarget property to DownlevelD) Set the inherits property to codeb
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Where is the default Session data is stored in ASP.Net
Skill/Topic: IntermediateA) InProcessB) StateServerC) SQL ServerD) All of the above
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Select the caching type supported by ASP.Net
Skill/Topic: IntermediateA) Output CachingB) DataCachingC) Both a & bD) None of the above
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Which property of the session object is used to set the local identifier ?
Skill/Topic: IntermediateA) SessionIdB) LCIDC) ItemD) Key
Tanuja Jaiswal
- Feb 15th, 2012
B) LCID
LCID is an attribute and its value is any valid local identifier. It is used to set local identifier for a page.smit
- Aug 4th, 2011
LCID
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The interface used by ASP.Net to create Unique Id�s?
Skill/Topic: IntermediateA) AppDomainsetupB) System.UI.Naming.ContainerC) IAsyncResultD) customFormatter
Shoab Qureshi
- Oct 12th, 2014
ans:-B) System.UI.Naming.Container
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what is the difference between user control and custom control
Skill/Topic: IntermediateA) Both can use as drag and drop toolB) Both are sameC) Both can use different applicationD) One Custom Control can be use in different project but not the same with User control
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The number of forms that can be added to a aspx page is
Skill/Topic: IntermediateA) 2B) 3C) 1D) More than 3
manceelee
- Feb 10th, 2016
Allows 1 form with runat="server" but can be use as many as forms without runat="server"
Pratul Tripathi
- Sep 2nd, 2015
You can have only 1 form with runat="server". If you use more, you will get a runtime error.
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It is possible to set Maximum length for a text box through code
Skill/Topic: IntermediateA) TrueB) False
saswata.purkayastha
- Apr 25th, 2007
Yes,true.But,I would have used client side script like Javascript for that.
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Why is Global.asax is used
Skill/Topic: BeginnerA) Implement application and session level eventsB) Declare Global variablesC) No use
Cliff
- Jul 24th, 2013
Yes you can declare "Global variables" in the global file, but if you are answering this question on a test with these options, pick "A".
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What�s the difference between Response.Write() andResponse.Output.Write()?
Skill/Topic: BeginnerA) Response.Output.Write() allows you to flush outputB) Response.Output.Write() allows you to buffer outputC) Response.Output.Write() allows you to write formatted outputD) Response.Output.Write() allows you to stream output
MAndeep Singh
- Apr 27th, 2015
C) Response.Output.Write() allows you to write formatted output
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What is the transport protocol used to call a webservice
Skill/Topic: BeginnerA) HTTPB) SOAPC) TCPD) SMTP
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A web application running on multiple servers is called as
Skill/Topic: BeginnerA) WebFormB) WebfarmC) Website
omkar shinde
- Jan 2nd, 2012
A) WebFarm
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Custom Controls are derived from which of the classes
Skill/Topic: BeginnerA) System.Web.UI.WebcontrolB) System.Web.UI.CustomcontrolC) System.Web.UI.Customcontrols.Webcontrol
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To add a custom control to a Web form we have to register with
Skill/Topic: BeginnerA) TagPrefixB) Name space of the dll that is referencedC) AssemblynameD) All of the above
arf
- Oct 11th, 2013
D
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Can a dll run as stand alone application ?
Skill/Topic: BeginnerA) NoB) YesC) Sometimes we can make it by introducing some code
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Which of the following is true ?
Skill/Topic: BeginnerA) User controls are displayed correctly in the Visual Studio .NET DesignerB) Custom controls are displayed correctly in VS.Net DesignerC) User and Custom controls are displayed correctly in the Visual Studio .NET Designer.
sumalatha
- Apr 1st, 2006
User and Custom controls are displayed correctly in the Visual Studio .NET Designer
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Which of these namespaces used for FileAccess
Skill/Topic: BeginnerA) System.IOB) System.IO.IsolatedStorageC) System.DirectoryServicesD) All of these
robin
- Aug 27th, 2011
A. System.IO
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The code will be processed on web server when the runat attribute of the < Script > tag has the following value.
Skill/Topic: BeginnerA) DesktopB) ClientC) Server
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The best way to delimit ASP.Net code from HTML code in your pages is by using --------------- tags.
Skill/Topic: BeginnerA) < Body >B) < Head >C) < Script >
uchi
- Sep 28th, 2011
C
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The following is the namespace used for Reflection:
Skill/Topic: AdvancedA) System.Windows.ReflectionB) System.ReflectionC) System.Features.Reflection
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To access attributes, the following is used:
Skill/Topic: AdvancedA) reflectionB) pointersC) collections
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The following method is used to force the garbage collector :
Skill/Topic: AdvancedA) Garbage.CollectB) System.GC.Collect()C) Gc.Clea.Up()
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Each process in a 32 bit Windows environment has the following amount of virtual memory available:
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The correct syntax for defining a delefate is:
Skill/Topic: AdvancedA) delegate {MyMethod( int y) }B) delegate void MyMethod(int y) ;C) delegate: MyMethod (int y)
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We inherit a class using the following syntax:
Skill/Topic: AdvancedA) class DerivedClass: BaseClass{ }B) class DerivedClass:: BaseClass{ }C) class BaseClass :DerivedClass { }
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How do you deploy an assembly?
Skill/Topic: AdvancedA) Using MSI installerB) using a CAB archiveC) using XCOPYD) All of the above
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How does a running application communicate or share data with other applicxation running indifferent application domains?
Skill/Topic: AdvancedA) using ExceptionsB) using attributesC) using .NET remoting services.
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We need to register a private assembly in the Windows registry in order to use it.
Skill/Topic: AdvancedA) TrueB) FalseExplanation: We just need to copy it in the folder where the executable is located or in a subfolder below it..
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Assembly version information is stored in the:
Skill/Topic: AdvancedA) ManifestB) Garbage CollectorC) Heap
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Assemblies are of the following types:
Skill/Topic: AdvancedA) SsharedB) PrivateC) Friendly
Imran Arshad
- Aug 11th, 2006
There is shared assemblies which is used for diffrenent language interpotability.
arunwizkid@yahoo.com
- May 2nd, 2006
Now in .NET 2.0,it is possible to create friend assembly.Pls kindly take note of it.
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Any process can be divided into multiple
Skill/Topic: AdvancedA) ProgramsB) ThreadsC) Application domains
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Editorial / Best Answer
LordAlex- Member Since Nov-2011 | Nov 5th, 2011
Application domains are typically created by runtime host( i.e. Windows process/program). Application domains provide an isolation boundary for security,.... .NET program is an Assembly loading into an Application domain. Threads are the operating system construct used by the common language runtime to execute code in Application domains. Therefore, for .NET, Process (runtime host) -> Application Domains -> Assemblies (.NET programs)-> Managed Threads.
Sivavt
- Mar 25th, 2012
App domains. This could be best understood by taking an example of a browser program. A browser may run multiple web applications simultaneously. All these could be run in separate app domains. So, i...
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NET offers the follwing security features:
Skill/Topic: AdvancedA) Transaction based securityB) Code-based securityC) Both the aboveD) None of the above
albanaco
- Jun 25th, 2008
Both..NET offers "code access security".NET offers "transaction security" (System.Transactions)
cocomany
- Mar 14th, 2006
Both- transactions in com+ offer role based security s well.
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You can explicitly call the garbage collector
Skill/Topic: AdvancedA) TrueB) False
s
- Feb 15th, 2006
True, we can call GC using System.GC.Collect() method.
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Garbage Collector:
Skill/Topic: AdvancedA) Copies the IL code to the heapB) Destroys the pointersC) is responsible for automatic memory management
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Reference types are stored in :
Skill/Topic: AdvancedA) the HeapB) the stackC) the hard-disk
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Value Types are stored on the heap ..? Is it true/False ?
Skill/Topic: AdvancedA) TrueB) False
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What is automatic memory management in .NET known as:
Skill/Topic: AdvancedA) Managed CodeB) Smart CachingC) Garbage Collection
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What is Boxing?
Skill/Topic: AdvancedA) conversion of reference types to value typesB) conversion of value types to reference typesC) Encapsulating a base class
Ramesh
- Mar 21st, 2006
The Exact Result is Ans : Convertion of Value type to Reference type
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Can we use pointers in C#?
Skill/Topic: AdvancedA) YesB) NoExplanation: Pointers can be used if required, but it will be unsafe code.
s
- Feb 15th, 2006
Well, actually, we can use pointers in C#..only tht we should mark the code as unsafe and before compiling we should use the tag unsafe.
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Events in C# are impltemented using:
Skill/Topic: AdvancedA) Specialized DLLsB) PointersC) Delegates
prakhar
- May 17th, 2006
ha ha ha..here u go again sisira.. opening your stinking mouth.When you dont know the answers why you shamelessly give the answer
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We can call COM objects in C# using :
Skill/Topic: AdvancedA) DLLImportB) UsingDLLC) DLLCall
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1. Are there some features of C# language not supported by .NET?
Skill/Topic: AdvancedA) YesB) NoExplanation: For example some instances of operator overloading!
whbloodworth
- Jan 25th, 2008
With respect to multiple inheritance, I would have to say that the answer is "mostly" that C# does not support multiple inheritance. The "mostly" part does not take into accoun...
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To change the value of a variable while debugging , the following window is used
Skill/Topic: IntermediateA) DebugB) WatchC) Immediate
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Method Overloading and Overriding are the same
Skill/Topic: IntermediateA) TrueB) FalseExplanation: Overloading is changing the behavior of a method in a derived class, whereas overriding is having multiple methods with the same name
samiksc
- Dec 29th, 2005
Method overloading means having two methods with the same name but different signatures in the same scope. These two methods may exist in the same class or one in base class and another in derived cla...
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What is a multicast delegate?
Skill/Topic: IntermediateA) a delegate having multiple handlers assigned to itB) a delegate called multiple timesC) a delegate which has multiple implementations
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Structs and classes support inheritance
Skill/Topic: IntermediateA) TrueB) FalseExplanation: Only classes can inherit. Structs can�t.
deepak.dagar
- Apr 29th, 2009
Actually Interfaces are 'Implemented' & never 'Inherited'.So this sounds technically correct that Structs does not support Inheritance.
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Interfaces provide implementation of methods
Skill/Topic: IntermediateA) TrueB) FalseExplanation: They only provide declaration on methods, events and properties
bhagyeshpatel
- Dec 26th, 2005
You should be aware, however, that it is not permitted to supply implementationsof any of the members of an interface.This is a line of C# Professional 3rd edition book pressed wroxPage No 124So it is not posible to implement methods in interface but u can implemement it on drived class.
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You can inherit multiple interfaces in C#
Skill/Topic: IntermediateA) TrueB) FalseExplanation: A class can inherit multiple interfaces
chandrasoma
- Nov 20th, 2006
Question should be re-written as " Can C# classes implement multiple interfaces?". I think you implement interfaces rather than inherit them.
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Even if an exception hasn�t occurred, the �finally� block will get executed
Skill/Topic: IntermediateA) YesB) NoExplanation: Finally block is always executed
Faheem Lari
- May 25th, 2006
A) Yes
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Namespaces are used to
Skill/Topic: IntermediateA) Separate assembliesB) Create a unique name for an assemblyC) Avoid name clashes between data types
khader
- Oct 13th, 2006
All the above are correct.
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Which of the following is the correct way to instantiate an object in C#:
Skill/Topic: BeginnerA) objThis = System.CreateObject( ThisObject);B) objThis = new ThisObject();
Naveen kumar
- Mar 3rd, 2017
B)objThis=new ThisObject();
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We declare an integer variable 'x' in C# as
Skill/Topic: BeginnerA) x integer;B) integer x;C) int x;
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A code block in C# is enclosed between
Skill/Topic: BeginnerA) < >B) [ ]C) { }
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To read user input from the console, the following statement is used
Skill/Topic: BeginnerA) Console.ReadLine();B) Console.Input()C) System.GetuserRequest();
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The following is a correct call to the Main() function
Skill/Topic: BeginnerA) static void Main()B) static Main(void)C) Main()
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All the C# programs must have the following statement
Skill/Topic: BeginnerA) using DotNetB) using SystemC) include System
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To write a line of text to the xonsole window, we make the following call
Skill/Topic: BeginnerA) Console.WriteLine()B) console.writeline()C) System.Output()
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There must be at least the following function in a C# program
Skill/Topic: BeginnerA) main()B) Main()C) Enter()
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Every statement in C# must end in
Skill/Topic: BeginnerA) ;B) ,C) #
sudhakar
- Oct 8th, 2006
A);
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The C# code files have an extension
Skill/Topic: BeginnerA) .csharpB) .csC) #
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You can create the following using C#
Skill/Topic: BeginnerA) class librariesB) Stand alone GUI (Windows Forms) applicationsC) ASP.NET Web pagesD) Command Line applications
nikhilrawat23
- May 29th, 2008
you can create all four type of application through c#.just go through add new project----than u will find there some option-1.windowapplication2.window control liberary3.crystal report application4.c...
madhavi
- Nov 14th, 2006
We can create all the four types of applicationYou can refer VS.Net2005 --> New Project --> U can find all the templates to create above mentioned applications
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ASP.NET web pages can be programmed in C#?
Skill/Topic: BeginnerA) YesB) No
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IL code compiles to
Skill/Topic: BeginnerA) Platform-specific Executable codeB) Byte CodeC) .NET CodeExplanation: The CLR compiles the IL into Platform-specific Executable code
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Which is the first level of compilation in the .NET languages?
Skill/Topic: BeginnerA) CLRB) ILC) Platform-specific codeExplanation: Intermediate Language
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What is IL?
Skill/Topic: BeginnerA) Interchangeable LibraryB) Interoperable LanguagesC) Intermediate LanguageD) Interchangeable languages
Ravi
- Dec 3rd, 2005
Intermediate Language
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What is CLR?
Skill/Topic: BeginnerA) Common Library ReorganizationB) Csharp Language RespecificationC) Csharp Library RosterD) Common Language Runtime
vinay1234
- Jun 30th, 2008
CLR is Common Language Runtime which compile the code two time, manage many features like garbage collection.
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What is CLS?
Skill/Topic: BeginnerA) Common Language SpecificationB) Common Library SystemC) Csharp Language SpecificationD) Code Location Specification
moruan
- Feb 8th, 2009
CLS is common language specification, simply a specification that defines the rules to support language integration in such a way that programs written in any language.
Bhaskar Char T.N
- Jan 19th, 2007
CLS: (Common Language Specification) This allows very tight interrupt between different .net languages.E.g.:- Allowing C# class to inherit in vb class.
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What is working of bean in EJB
sahu
- Jan 27th, 2006
An enterprise Bean is a body of code with fields and methods to implement modules of business logic. Client programs interact with one or more Beans, and an enterprise Bean can be implemented to inter...
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what is default Buffersize of any Bufferedclass?
Joseph Kiernan
- Jul 27th, 2006
The default buffer size is not specified for any buffered class and can vary between implementations. All that the Javadoc says is 'The default is large enough for most purposes.' I could tell you wha...
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what is ADO.NET
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Editorial / Best Answer
Ranjit- Member Since Oct-2005 | Nov 28th, 2005
ADO.NET is the primary relational data access model for Microsoft .NET-based applications. It may be used to access data sources for which there is a specific .NET Provider, or, via a .NET Bridge Provider, for which there is a specific OLE DB Provider, ODBC Driver, or JDBC Driver. ADO.NET is sometimes considered an evolution of ADO technology, but it is important to note that some major changes were made between the two.
Pendurti
- Sep 11th, 2008
ADO.NET is something that allows us to interact with relational databases and other data sources. It is a technology that ASP.NET applications use to communicate with a database, whether we need to add a new customer record, make a purchase, or display a product catalog.
shravanmadhastu
- May 24th, 2008
ADO.NET stands Active X Data Objects.Net.It is used in microsoft.net to communicate with datastore.ADO.NET is inherited from System.Data.dll name spaceADO.NET has two componentsthey are 1. .Net Data p...
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how to fill datalist usinf XML file and how to bind it,code behind language is c#
plz give answer
sahu
- Dec 10th, 2005
Ans:Hello i have written this code my project it working fine//Create datasetDataSet ds=new DataSet()//readXml fileds.readXml(Server.MapPath("*.xml"))//Create datalist objectlet'sprotected System.Web....
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Difference between static page and dynamic page?
Static PagesQuick and easy to put together, even by someone who doesn't have much experience. Ideal for demonstrating how a site will look. Cache friendly, one copy can be shown to many people. Dynamic PagesOffers highly personalized and customised visitor options. Database access improves the personalized experience (as opposed to using just client side cookies) Scripts can read in data sources and...
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When do you get constraint violation? What are the types of constraints?
sahu
- Jan 28th, 2006
Ans:Database returns an error message when a constraint is violated.Differnet type of constrains;1.Domain Constraints:A Domain constraint deals with one or more columns2.Entity Constraints3.Referentia...
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can we connect two datareader to same data source using single connection at same time?
No, we cann't since once connection to database is opened must be closed before you reopen again .
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Answered by: Sathiyavathi
- Mar 24th, 2006
We can do it in ADO.Net 2.0 as
In your connection string there is an additional attribute named as MARS
and set it as true. MARS stands for Multiple Active Result Sets.
Ex :
string connectionString = "Data Source=MSSQL1;" +
"Initial Catalog=AdventureWorks;Integrated Security=SSPI" +
"MultipleActiveResultSets=True";rajankvns
- Sep 18th, 2011
Yes, 100% you can connect. help of-- Multiple Active Result Sets (MARS). more details with Example visit below Microsoft official website. -- http://msdn.microsoft.com/en-us/library/yf1a7f4f%28v=vs....
Ravi
- Sep 16th, 2011
Yes, you can connect two datareader to the same datasource, but one main thing is close the first datareader before using second one then only it's possible. The point is, we can have any number of d...
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What is difference in an Abstract Class and an Interface.
Abstract class can contain method definations also.Interfaces are essentially having all method prototypes no definitionIn short Interface is a abstract class having all methods abstract
ajayms2000
- Mar 2nd, 2009
Besides the rules difference between of interfaces and abstract class, keep this also in mind.Abstract classes promotes high cohesion, while interfaces provides loose coupling. High cohesion and loose coupling are considered as the best design strategy for complex software designs.
Priestly George Varghese
- Oct 9th, 2007
Interface All methods are abstract and there is no implementation. No access modifiers are allowed. Interfaces are essentially having all method prototypes no definition We can achieve multipl...
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What is the execution procedure in oracle ?
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Editorial / Best Answer
sahu- Member Since Dec-2005 | Mar 29th, 2007
Hi,
if you Passing Parameters,
then
Below it will excute
typesql> execute Procedure_name(arg1,arg2,...,arg n);...
if donot pass Parameters
then
typesql> execute Procedure_namesahu
- Mar 29th, 2007
Hi,if you Passing Parameters,then Below it will excutetypesql> execute Procedure_name(arg1,arg2,...,arg n);...if donot pass Parametersthentypesql> execute Procedure_name
RaviKumar
- Oct 28th, 2005
typesql> execute Procedure_name(arg1,arg2,...,arg n);
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How to find the given query is optimised one or not?
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Answered by: Vishal
- Apr 5th, 2006
You can use Execution Plan in SQL server to see the cost of your querry.By this you can optimised your query.
Pendurti
- Sep 11th, 2008
There is something called Query analyzer that u can make use of to find out whether the given query is optimized or not.
sahu
- Mar 29th, 2007
Hi, First Excute Sql Quries in Query Analzer,see How much time 2 take Excute , if Less then the ur desired Time, then it will Optimize query
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How to copy the contents from one table to another table and how to delete the source table in ado.net?
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samiksc- Member Since Oct-2005 | Jul 12th, 2007
The question can mean 2 tasks -
1. Copy one 'datatable' to another and delete the source 'datatable' OR
2. Copy one database table (say a table in sql server database) to another database table, and delete the source table which is in the SQL server database. This operation is to be performed using ADO.Net
Answers:
1. DataTable newOne = originalOne.Copy(); originalOne.Dispose(); -- Note that originalOne.Clear() will simply delete all rows from the table, but the table object with its structure will remain there.
2. Run DDL commands using 'ExecuteNonQuery' method of DataCommand object.
e.g. string cmdText1 = "create table newOne as select * from originalOne" (copy table to another)
string cmdText2 = "drop table originalOne";
DataCommand dataCmd = new SqlDataCommand(cmdText1, conn);
conn.Open();
dataCmd.ExecuteNonQuery();
dataCmd.CommandText = cmdText2;
dataCmd.ExecuteNonQuery();
conn.Close();sathin
- Oct 29th, 2009
This is definitely possible. I tried making it simple by talking two gridviews in the design part and writing the below code when you try creating a datatable do avoid the new keyword Imports S...
Dharmesh279
- Oct 18th, 2008
We can copy the contents from 1 table to another table by using Bulk Copy and delete a table by simply write the query of drop a table when we create sqlcommand object.
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What is stored procedure?
A program running in the database that can take complex actions based on the inputs you send it. Using a stored procedure is faster than doing the same work on a client, because the program runs right inside the database server. Stored procedures are nomally written in PL/SQL or Java.
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What is the difference between structures and classes in C++?
There is only one difference ,in classes the members are private by default whereas it is not so in structures.
sripudi
- Jan 5th, 2009
There are a lot of differences between Structure & Class in C.But in C++ the only difference is the members structure are by default public where as class members are by default private.Using C++ structure we can do the OOPS concepts like inheritance
berezleon
- Dec 1st, 2007
Amid, you are talking about "C" structure that knows nothing about classes etc. The only difference between C++ class and struct is default access specifier (private and public respectively)
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Does c++ support multilevel and multiple inheritance?
samiksc
- Jan 20th, 2006
Yes, In C++ we can derive a class C from B which is derived from A -- multilevel inheritance.In C++ we can derive a class D from two base classes A and B -- multiple inheritance. This may cause a prob...
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In DataGrid, is it possible to add rows one by one at runtime. That means after entering data in one row next row will be added.
Dipali Shah
- Sep 4th, 2008
Yes, you can add rows one by one at runtime. for that you have to maintain DataTable and its ViewState. So after pageload data is not removed from datatable.For display purpose you have to bind that ...
devendra
- Sep 5th, 2007
Exampledim da as new sqldataadapter("select...",conn)dim ds as new datasetda.fill(ds,xyz)dim dr as datarowdr=ds.tables(0).rows.newrowwith dr.items(0)=textbox1.text.items(1)=textbox2.text.items(2)=textbox3.textds.tables(0).addrow(dr)datagrid1.datasource=ds.tables(0)
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How's method overriding different from overloading?
When overriding, you change the method behavior for a derived class. Overloading simply involves having a method with the same name within the class.
sahu
- Dec 12th, 2005
overriding keyword cahnge behavour in derive class with same signature,Overloading means same name but passing different datatype or different number arguments within the same class
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What's the top .NET class that everything is derived from?
System.Object.
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Describe the accessibility modifier protected internal.
It's available to derived classes and classes within the same Assembly (and naturally from the base class it's declared in).
sahu
- Jan 10th, 2006
ans: It's available to derived classes and classes within the same Assembly (and naturally from the base class it's declared in).
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Are private class-level variables inherited?
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Does C# support multiple inheritance?
No, use interfaces instead.
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How do you inherit from a class in C#?
Place a colon and then the name of the base class. Notice that it's double colon in C++.
nitin
- Dec 11th, 2006
Lets us say there are 2 claases ,Class A and ClassB.ClassA -BaseClass,ClassB-derived class ClassA{}ClassB:ClassA(baseclass){}here we can say ClassB is derived from classA.Hope this is right.
sahu
- Dec 10th, 2005
Ans:Placing Colon(:)Let's exampleclass x{//code}class y:x(here drive class placing colon){//code}
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What's the implicit name of the parameter that gets passed into the class' set method?
Value, and its datatype depends on whatever variable we're changing.
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What must be set to access a database that contains a stored procedure which returns multiple record sets used for process in the application?
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What are interfaces, abstract classes. What is their purpose and differences ?
kolanchinathan.e
- Jul 21st, 2009
Interface (behavior) is same as class they have numerous of variable and methods.All methods which have interface is abstract methods. Abstract class is class this is partial implementation gap for su...
sahu
- Dec 9th, 2005
Abstract Class: Instance cannot be created. Optionally can have one or more abstract methods but not necessary. Can provide body to Classes. Interface: What a Class must do, But not how-to. B...
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What does the parameter Initial Catalog define inside Connection String?
The database name to connect to.
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Why would you use untrusted verificaion?
Web Services might use it, as well as non-Windows applications.
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Which one is trusted and which one is untrusted?
Windows Authentication is trusted because the username and password are checked with the Active Directory, the SQL Server authentication is untrusted, since SQL Server is the only verifier participating in the transaction.
sahu
- Jan 9th, 2006
ans:Trusted Windows Authentication is trusted because the username and password are checked with the Active Directory.Untrusted.the SQL Server authentication is untrusted, since SQL Server is the only verifier participating in the transaction.
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What connections does Microsoft SQL Server support?
Windows Authentication (via Active Directory) and SQL Server authentication (via Microsoft SQL Server username and passwords).
sahu
- Jan 9th, 2006
Ans:Windows Authentication (via Active Directory) and SQL Server authentication (via Microsoft SQL Server username and passwords).
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Explain ACID rule of thumb for transactions.
Transaction must be Atomic (it is one unit of work and does not dependent on previous and following transactions), Consistent (data is either committed or roll back, no �in-between� case where something has been updated and something hasnot), Isolated (no transaction sees the intermediate results of the current transaction), Durable (the values persist if the data had been committed even if the system...
sahu
- Jan 9th, 2006
Ans:ACID:ExpandingA:AtomicTransaction must be Atomic (it is one unit of work and does not dependent on previous and following transactions)C:ConsistentConsistent (data is either committed or roll back...
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What is the wildcard character in SQL?
Let us say you want to query database with LIKE for all employees whose name starts with La. The wildcard character is %, the proper query with LIKE would involve La%.
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What are advantages and disadvantages of Microsoft-provided data provider classes in ADO.NET?
SQLServer.NET data provider is high-speed and robust, but requires SQL Server license purchased from Microsoft. OLE-DB.NET is universal for accessing other sources, like Oracle, DB2, Microsoft Access and Informix, but it is a .NET layer on top of OLE layer, so not the fastest thing in the world. ODBC.NET is a deprecated layer provided for backward compatibility to ODBC engines.
sahu
- Jan 9th, 2006
Ans:Advantage:SQLServer.NET data provider is high-speed and robust.DisAdvantage.but requires SQL Server license purchased from Microsoft
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Explain the three services model (three-tier application).
Presentation (UI), business (logic and underlying code) and data (from storage or other sources).
sahu
- Jan 9th, 2006
Ans:1.Presentation (UI), 2.business (logic and underlying code) and 3.data access layer(from storage or other sources).
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Can you change the value of a variable while debugging a C# application?
Yes, if you are debugging via Visual Studio.NET, just go to Immediate window.
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What are three test cases you should go through in unit testing?
Positive test cases (correct data, correct output), negative test cases (broken or missing data, proper handling), exception test cases (exceptions are thrown and caught properly).
sahu
- Jan 9th, 2006
Ans:Yes,It is corect.Positive test cases (correct data, correct output), negative test cases (broken or missing data, proper handling), exception test cases (exceptions are thrown and caught properly).
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How do you debug an ASP.NET Web application?
Attach the aspnet_wp.exe process to the DbgClr debugger.
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Where is the output of TextWriterTraceListener redirected?
To the Console or a text file depending on the parameter passed to the constructor.
sahu
- Jan 9th, 2006
Answer: To the Console or a text file depending on the parameter passed to the constructor.
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Why are there five tracing levels in System.Diagnostics.TraceSwitcher?
The tracing dumps can be quite verbose and for some applications that are constantly running you run the risk of overloading the machine and the hard drive there. Five levels range from None to Verbose, allowing to fine-tune the tracing activities.
sahu
- Jan 9th, 2006
Ans:The tracing dumps can be quite verbose and for some applications that are constantly running you run the risk of overloading the machine and the hard drive there. Five levels range from None to Verbose, allowing to fine-tune the tracing activities.
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What does assert() do?
In debug compilation, assert takes in a Boolean condition as a parameter, and shows the error dialog if the condition is false. The program proceeds without any interruption if the condition is true.
sahu
- Dec 14th, 2005
Ans:In debug compilation, assert takes in a Boolean condition as a parameter, and shows the error dialog if the condition is false. The program proceeds without any interruption if the condition is true.
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What does the This window show in the debugger?
It points to the object that is pointed to by this reference. Object�s instance data is shown.
sahu
- Jan 9th, 2006
Ans:It points to the object that is pointed to by this reference. Object?s instance data is shown
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What debugging tools come with the .NET SDK?
CorDBG - command-line debugger, and DbgCLR - graphic debugger. Visual Studio .NET uses the DbgCLR. To use CorDbg, you must compile the original C# file using the /debug switch.
sahu
- Jan 9th, 2006
Ans:CorDBG - command-line debugger, and DbgCLR - graphic debugger. Visual Studio .NET uses the DbgCLR. To use CorDbg, you must compile the original C# file using the /debug switch.
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Is XML case-sensitive?
Yes, so and are different elements.
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What is the difference between and XML documentation tag?
Single line code example and multiple-line code example.
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How do you generate documentation from the C# file commented properly with a command-line compiler?
Compile it with a /doc switch.
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What is the difference between // comments, /* */ comments and /// comments?
Single-line, multi-line and XML documentation comments.
ushalakshmi
- May 7th, 2008
// Is for Single-Line Comments./* */ Is for Multi-Line Comments./// For XML Documentation Comments
sahu
- Dec 14th, 2005
Ans:// for single comments/* */ for multiple cmments/// for XML documentation comments.
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What namespaces are necessary to create a localized application?
System.Globalization, System.Resources.
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What are the ways to deploy an assembly?
An MSI installer, a CAB archive, and XCOPY command.
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How is the DLL Hell problem solved in .NET?
Assembly versioning allows the application to specify not only the library it needs to run (which was available under Win32), but also the version of the assembly.
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What is a multicast delegate?
It is a delegate that points to and eventually fires off several methods.
sahu
- Jan 6th, 2006
Ans:Yes, It is a delegate that points to and eventually fires off several methods.
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Can multiple catch blocks be executed?
No, once the proper catch code fires off, the control is transferred to the finally block (if there are any), and then whatever follows the finally block.
samiksc
- Jan 9th, 2006
No: only one catch block will be executed for an exception. We can write several catch blocks below a try block. When an exception generates all these catch blocks will be scanned sequentially for a m...
yazhini
- Dec 14th, 2005
No.Multiple catch blocks will not be executed. But, we can use multiple catch blocks for a try block.The respective catch block will get executed according to the error arises.
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Will finally block get executed if the exception had not occurred?
Yes. What is the C# equivalent of C++ catch (�), which was a catch-all statement for any possible exception?
Sivavt
- Mar 25th, 2012
Yes. Finally will be executed even if the exception hasn't occurred. Catch all statement.
Code- try{}
- catch{}
- Or
- try{}
- catch(Exception e){}
Dadan Tiwari
- Feb 13th, 2012
Yes. Finally block will always execute whether execption occur or not.
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What is the .NET datatype that allows the retrieval of data by a unique key?
HashTable. What is class SortedList underneath?
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How can you sort the elements of the array in descending order?
By calling Sort() and then Reverse() methods.
bhawesh
- Feb 21st, 2006
first sort elements of array in ascending order using appropriate sorting technique( BUBBLE,HEAP,QUICK..........)AFTER sorting scan array in reverse order ie and store it.
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What is the difference between the System.Array.CopyTo() and System.Array.Clone()?
The first one performs a deep copy of the array, the second one is shallow.
dotnetasit
- Feb 21st, 2008
I felt the need of this posting because I have seen postings (not only in this forum but also in many others) saying that "CopyTo() makes a deep copy and Clone() makes a shallow copy." ...
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Can you store multiple data types in System.Array?
No.
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What is the advantage of using System.Text.StringBuilder over System.String?
StringBuilder is more efficient in the cases, where a lot of manipulation is done to the text. Strings are immutable, so each time it is being operated on, a new instance is created.
sahu
- Jan 9th, 2006
Ans:Yes,it is right.Answer: StringBuilder is more efficient in the cases, where a lot of manipulation is done to the text. Strings are immutable, so each time it is being operated on, a new instance i...
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What is the difference between System.String and System.StringBuilder classes?
System.String is immutable; System.StringBuilder was designed with the purpose of having a mutable string where a variety of operations can be performed.
sahu
- Jan 9th, 2006
Answer: System.String is immutable; System.StringBuilder was designed with the purpose of having a mutable string where a variety of operations can be performed. function checkf(form) { var f = document.form1;if (document.form1.cmt.value=='') { alert('Please enter the comment'); return false; }}
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If a base class has a bunch of overloaded constructors, and an inherited class has another bunch of overloaded constructors, can you enforce a call from an inherited constructor to an arbitrary base constructor?
Yes, just place a colon, and then keyword base (parameter list to invoke the appropriate constructor) in the overloaded constructor definition inside the inherited class.
poovarasan
- Jan 20th, 2021
Use keyword base in the overloaded constructor definition inside the inherited class
chintan.desai
- Aug 7th, 2009
Just use keyword base(<<list of parameters>>) at the first line of code in respective derive class constructor.Example:Class A{ public A(string s) { } public A(int i, s...
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How can you overload a method?
Different parameter data types, different number of parameters, different order of parameters.
learnasp
- Oct 11th, 2007
A method can be overloaded by having different parameters as in different type of parameters and well different number of parameters.Also, if the parameter types are different than you can also have d...
sahu
- Dec 12th, 2005
Ans:Different parameter data types, different number of parameters, different order of parameters
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Why cannot you specify the accessibility modifier for methods inside the interface?
They all must be public. Therefore, to prevent you from getting the false impression that you have any freedom of choice, you are not allowed to specify any accessibility, it is public by default.
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What is an interface class?
It is an abstract class with public abstract methods all of which must be implemented in the inherited classes.
sahu
- Dec 12th, 2005
Ans:Definition:An Interface is a reference type and it contains only abstract members. Interface's members can be Events, Methods, Properties and Indexers. But the interface contains only declaration ...
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Can you allow class to be inherited, but prevent the method from being over-ridden?
Yes, just leave the class public and make the method sealed.
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Can you prevent your class from being inherited and becoming a base class for some other classes?
Yes, that is what keyword sealed in the class definition is for. The developer trying to derive from your class will get a message: cannot inherit from Sealed class WhateverBaseClassName. It is the same concept as final class in Java.
sabir
- Jan 6th, 2006
Can be done by using the keyword "not inhertitable "syntax is not inheritable class '''''''''''''''codeend class
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Can you override private virtual methods?
No, moreover, you cannot access private methods in inherited classes, have to be protected in the base class to allow any sort of access.
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Can you declare the override method static while the original method is non-static?
No, you cannot, the signature of the virtual method must remain the same, only the keyword virtual is changed to keyword override.
gptnitesh
- Sep 11th, 2007
No you cannot declare the override method static while original method is non-static, not even vice versa.
Rajesh Ravindran
- Sep 11th, 2007
No, Because the Overrirde method or Overriden method should have same access attribute, same return type, same argument etc. If it is not same it will throw compiler error.
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What does the keyword virtual mean in the method definition?
The method can be over-ridden.
smandke
- Aug 27th, 2010
Virtual method in C# is a used to support polymorphism. This means that in a base class we will define a method foo1() with the keyword "virtual" and the derived classes will inherit t...
sahajanandk
- Mar 9th, 2009
Keyword virtual is used to make changes to the methods inside the virtual class while runtime. the virtual class should be overide with the same modifier, return type and the name.
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How is method overriding different from overloading?
When overriding, you change the method behavior for a derived class. Overloading simply involves having a method with the same name within the class.
learnasp
- Oct 11th, 2007
Overriding a method involves changing the business logic og the method, however the return type and parameters remain same. However in overloading a method you can have multiple methods with same name but different signatures.
sahu
- Jan 9th, 2006
Ans:Answer: When overriding, you change the method behavior for a derived class. Overloading simply involves having a method with the same name within the class. function checkf(form) { var f = document.form1;if (document.form1.cmt.value=='') { alert('Please enter the comment'); return false; }}
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What is the top .NET class that everything is derived from?
System.Object.
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C# provides a default constructor for me. I write a constructor that takes a string as a parameter, but want to keep the no parameter one. How many constructors should I write?
Two. Once you write at least one constructor, C# cancels the freebie constructor, and now you have to write one yourself, even if there is no implementation in it.
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Describe the accessibility modifier protected internal.
It is available to derived classes and classes within the same Assembly (and naturally from the base class it is declared in).
Harsh
- Jul 29th, 2011
Protected Internal Mean its a combination of Protected and Internal access modifier, Protected Internal member can be access from same assembly as well as only derived class l in another assembly.
sahu
- Jan 9th, 2006
Ans:protected internal is available to derived classes and classes within the same Assembly (and naturally from the base class it is declared in). function checkf(form) { var f = document.form1;if (document.form1.cmt.value=='') { alert('Please enter the comment'); return false; }}
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Are private class-level variables inherited?
Yes, but they are not accessible, so looking at it you can honestly say that they are not inherited. But they are.
Rajendra Mahakali
- Jun 29th, 2017
YES, But they are accessible. Although they are not visible or accessible, but YES they are inherited.
kodefuguru
- Aug 12th, 2010
All members are inherited from the base class except for instance and static constructors and destructors. Inherited private members are inaccessible unless the subclass is nested in the base class.
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When you inherit a protected class-level variable, who is it available to?
Classes in the same namespace.
Basavarajayya
- Nov 14th, 2009
Its available only to the derived classes and not all the classes in the NameSpace
anil4kick
- Sep 26th, 2009
Protected level variable is available to only sub classes(i.e class inherited from this base class).
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Does C# support multiple inheritance?
No, use interfaces instead.
sahu
- Dec 9th, 2005
No, Instead of this, we can inheritance the multiple interface,but C++ support multiple inheritance
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What is the implicit name of the parameter that gets passed into the class set method?
Value, and its datatype depends on whatever variable we are changing.
sahu
- Jan 6th, 2006
Ans:value is implicit name of the parameter that gets passed into the class set method.
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Does C# support parameterized properties?
No. C# does, however, support the concept of an indexer from language spec. An indexer is a member that enables an object to be indexed in the same way as an array. Whereas properties enable field-like access, indexers enable array-like access. As an example, consider the Stack class presented earlier. The designer of this class may want to expose array-like access so that it is possible to inspect...
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What is the equivalent to regsvr32 and regsvr32 /u a file in .NET development?
Try using RegAsm.exe. The general syntax would be: RegAsm. A good description of RegAsm and its associated switches is located in the .NET SDK docs. Just search on "Assembly Registration Tool".
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How can I get around scope problems in a try/catch?
If you try to instantiate the class inside the try, it'll be out of scope when you try to access it from the catch block. A way to get around this is to do the following: Connection conn = null; try {conn = new Connection();conn.Open();}finally{ if (conn != null) conn.Close(); }By setting it to null before the try block, you avoid getting the CS0165 error (Use of possibly unassigned local variable...
sahu
- Jan 10th, 2006
ans:Answer: If you try to instantiate the class inside the try, it'll be out of scope when you try to access it from the catch block. A way to get around this is to do the following: Connection conn =...
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Why do I get a security exception when I try to run my C# app?
Some security exceptions are thrown if you are working on a network share. There are some parts of the frameworks that will not run if being run off a share (roaming profile, mapped drives, etc.). To see if this is what's happening, just move the executable over to your local drive and see if it runs without the exceptions. One of the common exceptions thrown under these conditions is System.Security.SecurityException.To...
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Is there regular expression (regex) support available to C# developers?
Yes. The .NET class libraries provide support for regular expressions. Look at the documentation for the System.Text.RegularExpressions namespace.
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Is there any sample C# code for simple threading?
Some sample code follows: using System;using System.Threading;class ThreadTest {public void runme() {Console.WriteLine("Runme Called");} public static void Main(String[] args) {ThreadTest b = new ThreadTest();Thread t = new Thread(new ThreadStart(b.runme));t.Start();}}
sahu
- Jan 6th, 2006
Ans:using System;using System.Threading;class ThreadTest {public void runme() {Console.WriteLine("Runme Called");} public static void Main(String[] args) {ThreadTest b = new ThreadTest();Thread t = new Thread(new ThreadStart(b.runme));t.Start();}}
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How do you mark a method obsolete?
Assuming you've done a "using System;": [Obsolete]public int Foo() {...}or [Obsolete("This is a message describing why this method is obsolete")]public int Foo() {...}Note: The O in Obsolete is capitalized.
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Does C# support #define for defining global constants?
No. If you want to get something that works like the following C code:#define A 1use the following C# code: class MyConstants{public const int A = 1;}Then you use MyConstants.A where you would otherwise use the A macro. Using MyConstants.A has the same generated code as using the literal 1.
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How can I access the registry from C# code?
By using the Registry and RegistryKey classes in Microsoft.Win32, you can easily access the registry. The following is a sample that reads a key and displays its value: using System;using Microsoft.Win32;class regTest{public static void Main(String[] args){RegistryKey regKey;Object value;regKey = Registry.LocalMachine;regKey = regKey.OpenSubKey("HARDWARE\DESCRIPTION\System\CentralProcessor\0");value...
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Is it possible to have a static indexer in C#?
No. Static indexers are not allowed in C#.
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Does C# support try-catch-finally blocks?
Yes. Try-catch-finally blocks are supported by the C# compiler. Here's an example of a try-catch-finally block: using System;public class TryTest{static void Main(){try{Console.WriteLine("In Try block");throw new ArgumentException();}catch(ArgumentException n1){Console.WriteLine("Catch Block");}finally{Console.WriteLine("Finally Block");}}}Output: In Try BlockCatch BlockFinally Block
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If I return out of a try/finally in C#, does the code in the finally-clause run?
Yes. The code in the finally always runs. If you return out of the try block, or even if you do a "goto" out of the try, the finally block always runs, as shown in the following example: using System;class main {public static void Main() {try {Console.WriteLine("In Try block");return;}finally {Console.WriteLine("In Finally block");}}}Both "In Try block" and "In Finally block" will be displayed. Whether...
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Is it possible to restrict the scope of a field/method of a class to the classes in the same namespace?
There is no way to restrict to a namespace. Namespaces are never units of protection. But if you're using assemblies, you can use the 'internal' access modifier to restrict access to only within the assembly.
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How can I get the ASCII code for a character in C#?
Casting the char to an int will give you the ASCII value: char c = 'f';System.Console.WriteLine((int)c);or for a character in a string: System.Console.WriteLine((int)s[3]);The base class libraries also offer ways to do this with the Convert class or Encoding classes if you need a particular encoding.
sahu
- Jan 8th, 2006
Ans:// Create an ASCII encoding. Encoding ascii = Encoding.ASCII;The base class libraries also offer ways to do this with the Convert class or Encoding classes if you need a particular encoding.
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Can I define a type that is an alias of another type (like typedef in C++)?
Not exactly. You can create an alias within a single file with the "using" directive: using System;using Integer = System.Int32; // aliasBut you can't create a true alias, one that extends beyond the file in which it is declared. Refer to the C# spec for more info on the 'using' statement's scope.
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How does one compare strings in C#?
In the past, you had to call .ToString() on the strings when using the == or != operators to compare the strings' values. That will still work, but the C# compiler now automatically compares the values instead of the references when the == or != operators are used on string types. If you actually do want to compare references, it can be done as follows: if ((object) str1 == (object) str2) { ... }Here's...
Rana
- May 24th, 2007
You can use a.Equals(b) to compare and return a bool value where both a and b are strings.
sahu
- Jan 8th, 2006
Ans:The .NET Framework provides several methods to compare the values of strings.i am giving few methods nameLists of methodString.Compare:Compares the values of two strings. Returns an integer value....
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How do I register my code for use by classic COM clients?
Use the regasm.exe utility to generate a type library (if needed) and the necessary entries in the Windows Registry to make a class available to classic COM clients. Once a class is registered in the Windows Registry with regasm.exe, a COM client can use the class as though it were a COM class.
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How do you specify a custom attribute for the entire assembly (rather than for a class)?
Global attributes must appear after any top-level using clauses and before the first type or namespace declarations. An example of this is as follows: using System;[assembly : MyAttributeClass]class X {}Note that in an IDE-created project, by convention, these attributes are placed in AssemblyInfo.cs.
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Is there an equivalent of exit() for quitting a C# .NET application?
Yes, you can use System.Environment.Exit(int exitCode) to exit the application or Application.Exit() if it's a Windows Forms app.
sahu
- Jan 6th, 2006
Ans:YesSystem.Environment.Exit(int exitCode) to exit the application or Application.Exit() if it's a Windows Forms app.
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How do I convert a string to an int in C#?
Here's an example: using System;class StringToInt{public static void Main(){String s = "105";int x = Convert.ToInt32(s);Console.WriteLine(x);}}
Viktor Toman
- Apr 13th, 2011
One more way:String str = "123";Int32 num;Boolean converted = Int32.TryParse(str, out num);
sahu
- Jan 6th, 2006
Ans:by using onvert.ToInt32(string)ExampleString s = "45";int x = Convert.ToInt32(s);
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Is there a way of specifying which block or loop to break out of when working with nested loops?
The easiest way is to use goto: using System;class BreakExample {public static void Main(String[] args) {for(int i=0; i<3; i++) {Console.WriteLine("Pass {0}: ", i);for( int j=0 ; j<100 ; j++ ) {if ( j == 10) goto done;Console.WriteLine("{0} ", j);}Console.WriteLine("This will not print");}done:Console.WriteLine("Loops complete.");}}
jmruizsr
- Sep 18th, 2007
Yes, there are ways to break out of nested loops. Although GOTO is allowed in C#, it is normally a bad idea, bad style, and indication of lack of good software development foundation of those wh...
venkatesh
- Oct 13th, 2006
In java there is no goto operator.I think we should use label statement for that
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How do I simulate optional parameters to COM calls?
You must use the Missing class and pass Missing.Value (in System.Reflection) for any values that have optional parameters.
sahu
- Jan 10th, 2006
Ans:Yes,it is right.Answer: You must use the Missing class and pass Missing.Value (in System.Reflection) for any values that have optional parameters.
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How do I create a multilanguage, multifile assembly?
Unfortunately, this is currently not supported in the IDE. To do this from the command line, you must compile your projects into netmodules (/target:module on the C# compiler), and then use the command line tool al.exe (alink) to link these netmodules together.
sahu
- Jan 8th, 2006
Ans:Unfortunately, this is currently not supported in the IDE. To do this from the command line, you must compile your projects into netmodules (/target:module on the C# compiler), and then use the command line tool al.exe (alink) to link these netmodules together.
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Does C# support properties of array types?
Yes. Here's a simple example: using System;class Class1 {private string[] MyField;public string[] MyProperty {get { return MyField; }set { MyField = value; }}}class MainClass{public static int Main(string[] args) {Class1 c = new Class1();string[] arr = new string[] {"apple", "banana"};c.MyProperty = arr;Console.WriteLine(c.MyProperty[0]); // "apple"return 0;}}
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How do I create a multilanguage, single-file assembly?
This is currently not supported by Visual Studio .NET.
ramesh
- Jun 18th, 2007
It is not possible
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Is it possible to have different access modifiers on the get/set methods of a property?
No. The access modifier on a property applies to both its get and set accessors. What you need to do if you want them to be different is make the property read-only (by only providing a get accessor) and create a private/internal set method that is separate from the property.
Vikas Yadav
- Apr 9th, 2008
Yes,it is possible for get and set to have different access modifiers,but one of the accessors must follow the access level of property.
Sunny
- Jul 7th, 2007
Also in new version of DOTNET it is allowed and to set the variable we can use protected as access modifier
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How do you implement thread synchronization (Object.Wait, Notify,and CriticalSection) in C#?
You want the lock statement, which is the same as Monitor Enter/Exit: lock(obj) {// code}translates to: try {CriticalSection.Enter(obj);// code} finally {CriticalSection.Exit(obj);}
jaganmohan2
- Apr 18th, 2007
A thread is simply a separate stream of execution that takes place simultaneously with and independently of everything else that might be happening. A thread can synchronize itself with another thread...
sahu
- Jan 10th, 2006
ans:yes,it is right.lock statement, which is the same as Monitor Enter/Exit: lock(obj) {// code}translates to: try {CriticalSection.Enter(obj);// code} finally {CriticalSection.Exit(obj);}
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How do destructors and garbage collection work in C#?
C# has finalizers (similar to destructors except that the runtime doesn't guarantee they'll be called), and they are specified as follows: class C{~C(){// your code}public static void Main() {}}Currently, they override object.Finalize(), which is called during the GC process.
Sarika Macha
- Apr 30th, 2011
Destructors implicitly calls Finalize() method. It is advised not to used Destructors because when GC runs it pushes the object which has destructor in FinalizeQueue and clears the object from memory ...
pritam83
- Sep 21st, 2007
If you are not declare any Main() method in your program then compiler will give you this errors. Basically Main() is the entry point for compiler for execution. One more thing C# ia a case sensitive ...
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How do I declare inout arguments in C#?
The equivalent of inout in C# is ref. , as shown in the following example: public void MyMethod (ref String str1, out String str2) {...}When calling the method, it would be called like this: String s1;String s2;s1 = "Hello";MyMethod(ref s1, out s2);Console.WriteLine(s1);Console.WriteLine(s2);Notice that you need to specify ref when declaring the function and calling it.
sahu
- Jan 10th, 2006
Ans:Answer: The equivalent of inout in C# is ref. , as shown in the following example: public void MyMethod (ref String str1, out String str2) {...}When calling the method, it would be called like thi...
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I was trying to use an "out int" parameter in one of my functions. How should I declare the variable that I am passing to it?
You should declare the variable as an int, but when you pass it in you must specify it as 'out', like the following: int i;foo(out i);where foo is declared as follows: [return-type] foo(out int o) { }
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Does C# support templates?
No. However, there are plans for C# to support a type of template known as a generic. These generic types have similar syntax but are instantiated at run time as opposed to compile time. You can read more about them here.
pambatman
- Apr 15th, 2007
Generics are a new feature in version 2.0 of the C# language and the common language runtime (CLR). Generics introduce to the .NET Framework the concept of type parameters, which make it possible to d...
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How do you directly call a native function exported from a DLL?
Here's a quick example of the DllImport attribute in action: using System.Runtime.InteropServices;class C{[DllImport("user32.dll")]public static extern int MessageBoxA(int h, string m, string c, int type);public static int Main() {return MessageBoxA(0, "Hello World!", "Caption", 0);}}This example shows the minimum requirements for declaring a C# method that is implemented in a native DLL. The method...
sahu
- Jan 6th, 2006
ans:by using1st:using System.Runtime.InteropServicessecond step[DllImport("user32.dll")]use top of the class
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Does C# support C type macros?
No. C# does not have macros. Keep in mind that what some of the predefined C macros (for example, __LINE__ and __FILE__) give you can also be found in .NET classes like System.Diagnostics (for example, StackTrace and StackFrame), but they'll only work on debug builds.
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What is the syntax for calling an overloaded constructor within a constructor (this() and constructorname() does not compile)?
The syntax for calling another constructor is as follows: class B{B(int i){ }}class C : B{C() : base(5) // call base constructor B(5){ }C(int i) : this() // call C(){ }public static void Main() {}}
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Why do I get a syntax error when trying to declare a variable called checked?
The word checked is a keyword in C#.
Elean0r
- May 23rd, 2011
checked is a keyword in c#, which causes designated expressions to be checked for arithmetic overflow. It may be used in one of two ways:1) block - checked {} , where the block of statements enclosed ...
Vikas Yadav
- Apr 5th, 2008
Reason is checked is a keyword in C#,but if u want to keyword as an identifier use @ with it.e.g int @checked=3;This works with all the keywords,but it is recommended to avoid it.
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webFarm Vs webGardens
A web farm is a multi-server scenario. So we may have a server in each state of US. If the load on one server is in excess then the other servers step in to bear the brunt. How they bear it is based on various models. 1. RoundRobin. (All servers share load equally) 2. NLB (economical) 3. HLB (expensive but can scale up to 8192 servers) 4. Hybrid (of 2 and 3). 5. CLB (Component load balancer).A...
lokendra_ujjwal
- Aug 18th, 2007
There is two or more than two server in webfarm method, and we also have a router in this technique, which is basically is used to route the a particular incoming ?request .Where as in case?of a webga...
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What is a Metadata?
Metadata is information about a PE. In COM, metadata is communicated through non-standardized type libraries. In .NET, this data is contained in the header portion of a COFF-compliant PE and follows certain guidelines; it contains information such as the assembly’s name, version, language (spoken, not computer—a.k.a., “culture”), what external types are referenced,...
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What is managed code and managed data?
Managed code is code that is written to target the services of the Common Language Runtime. In order to target these services, the code must provide a minimum level of information (metadata) to the runtime. All C#, Visual Basic .NET, and JScript .NET code is managed by default. Visual Studio .NET C++ code is not managed by default, but the compiler can produce managed code by specifying ...
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What is the difference between a namespace and assembly name?
A namespace is a logical naming scheme for types in which a simple type name, such as MyType, is preceded with a dot-separated hierarchical name. Such a naming scheme is completely under control of the developer. For example, types MyCompany.FileAccess.A and MyCompany.FileAccess.B might be logically expected to have functionally related to file access. The .NET Framework uses a hierarchical...
jsubha2009
- Dec 2nd, 2009
Namespace actually stores assemblies through a common name. For example if System is a namespace it stores various methods stored in assembly named Console like WriteLine, ReadLine and so on.Assem...
rajnish singh
- Jul 23rd, 2009
Namespace - It is a logical group of classes means it defines boundary for classes. In a single program 2 namespace cannot be have same name. Assemblies - These physical structure of coding and ...
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What is an assembly?
An assembly is the primary building block of a .NET Framework application. It is a collection of functionality that is built, versioned, and deployed as a single implementation unit (as one or more files). All managed types and resources are marked either as accessible only within their implementation unit, or as accessible by code outside that unit. .NET Assembly contains all the metadata...
sandhya
- Apr 26th, 2006
The above said answer is good
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What is "Common Language Specification" (CLS)?
CLS is the collection of the rules and constraints that every language (that seeks to achieve .NET compatibility) must follow. It is a subsection of CTS and it specifies how it shares and extends one another libraries.
rinkujnu
- Jun 23rd, 2007
CLS specify certain set of rules to which, each .net languages should follow to achieve the language interoperability.Let take an situation:if u have 2 public classes in C#, let say class a and class ...
sahu
- Jan 27th, 2006
Ans:yes,CLS is the collection of the rules and constraints that every language (that seeks to achieve .NET compatibility) must follow. It is a subsection of CTS and it specifies how it shares and extends one another libraries.
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What is the output of the following query?
SELECT TRUNC(1234.5678,-2) FROM DUAL;1200
gemini burj
- Oct 23rd, 2007
if the -ive parameter is passed under TRUNC function truncation will be used to below decimal place i.e-1 means Trunc to 10th (1234 becomes 1230)-2 means trunc to 100th (1234 becomes 1200)-3 means tru...
thumati_nagaraju@yahoo.co.in
- Nov 17th, 2006
This is -ve no given so it remove the digits before decimal point ... and replace it by zero if want to check it just try with -1 or -2 or -3 ok seeu byeee
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Which function is used to find the largest integer less than or equal to a specific value?
FLOOR
Tushar
- May 9th, 2007
TRUNC will give same output as FLOOR
sahu
- Jan 27th, 2006
Ans:Yes ,we can find the largest integer less than or equal to a specific valueFLOOR
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What is the advantage of specifying WITH GRANT OPTION in the GRANT command?
The privilege receiver can further grant the privileges he/she has obtained from the owner to any other user.
sahu
- Jan 27th, 2006
Ans:From above Commentyes, we can give privilege receiver can further grant the privileges he/she has obtained from the owner to any other user.
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What will be the output of the following query
SELECT DECODE(TRANSLATE('A','1234567890','1111111111'), '1','YES', 'NO' );Answer :NOExplanation : The query checks whether a given string is a numerical digit.
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What will be the output of the following query?
SELECT REPLACE(TRANSLATE(LTRIM(RTRIM('!! ATHEN !!','!'), '!'), 'AN', '**'),'*','TROUBLE') FROM DUAL;TROUBLETHETROUBLE
sharathtest
- Aug 16th, 2007
The result is ' TROUBLETHETROUBLE ' Space before and after the text.
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Which system table contains information on constraints on all the tables created?
USER_CONSTRAINTS
psingla
- Mar 5th, 2010
For SQL Server users:SELECT object_name(id) objname,object_name(constid) constraintname,* from sysconstraints where object_name(id)= ''
malapati
- Oct 8th, 2008
Desc user_constraints;to see constraints on a particular table like emp select constraint_name,constraint_type,table_name from user_constraints;
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Which system tables contain information on privileges granted and privileges obtained?
USER_TAB_PRIVS_MADE, USER_TAB_PRIVS_RECD
sahu
- Jan 27th, 2006
Ans:yes,USER_TAB_PRIVS_MADE, USER_TAB_PRIVS_RECDsystem tables contain information on privileges granted and privileges obtained
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What are HTML controls, Web controls, and server controls.
sahu
- Jan 28th, 2006
Ans:Yes,it's okHTML Control - By default, HTML elements on a Web Forms page are not available to the server; they are treated as opaque text that is passed through to the browser. However, by converti...
Guest
- Mar 10th, 2005
HTML Control - By default, HTML elements on a Web Forms page are not available to the server; they are treated as opaque text that is passed through to the browser. However, by converting HTML element...
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What are interfaces?
Interfaces provide more sophisticated ways to organize and control the objects in your system. The interface keyword takes the abstract concept one step further. You could think of it as a �pure� abstract class. It allows the creator to establish the form for a class: method names, argument lists, and return types, but no method bodies. An interface can also contain fields, but The interface keyword...
subroto
- Sep 28th, 2007
Interfaces are the Pure Abstract class.which is use in java for the multiple inheritance. As we know that in java multiple inheritance is not possible,Interface is the Answer for this problem.
sahu
- Dec 9th, 2005
Interface: What a Class must do, But not how-to. Bridge for the communication when the caller does not know to whom he is calling. Describes externally visible behavior of element. Only Public members...
