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How many images can be placed in the image list?
64
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What is control array and how many we can have it with in the form?
Group of control share the same name. Max 32, 767.
Sandhya.Kishan
- May 31st, 2012
Control array consists of a group of controls that share the same name type and the same event procedures.It is a single dimensional array and we can add or delete array elements at the run time.Contr...
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Where will we give the option explicit keyword and for what?
In the general declarations section. To trap undeclared variables.
Sandhya.Kishan
- May 31st, 2012
We use explicit keyword to trap undeclared variables in the declaration section.
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Record set types and Number available in VB?
3. 1- Dynaset, 0 – Table, 2 – Snap Shot.
Sandhya.Kishan
- May 31st, 2012
There are 5 recordset type available in VB
1.Table-Type Recordset -0
2.Dynaset-Type Recordset -1
3.Snapshot-Type Recordset -2
4.Dynamic-Type Recordset -2
5.Forward only type Recordset -0 -
What are the locks available in Visual Basic?
Locking is the process by which a DBMS restricts access to a row in a multi-user environment 4 types of locks. They are 1. Batch Optimistic 2. Optimistic 3. Pessimistic 4. ReadOnly Operations in a relational database act on a complete set of rows. The set of rows returned by a SELECT statement consists of all the rows that satisfy the conditions in the WHERE clause of the statement. This complete set...
Sandhya.Kishan
- May 31st, 2012
The locks avaliable in Vb are
1.RdConcurReadOnly 0 (Default)
2.RdConcurLock 1 (Pessimistic Locking)
3.RdConcurRowver 2 (Optimistic Lociking)
4.RdConcurValues 3
5.RdConcurBatch 4 -
What is the difference between Property Get, Set and Let?
Set – Value is assigned to ActiveX Object from the form. Let – Value is retried to ActiveX Object from the form. Get- Assigns the value of an expression to a variable or property.
Sandhya.Kishan
- Jun 1st, 2012
Get property is used to initialize value to a variable.
Set property is used to set a reference to a property using the ByRef.
let property is used to is used to set value to a property using the ByVal.
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Different type of Instantiation?
Private – Only for the Specific Module. Public not creatable – Private & Public Multi Use - Variable we have to declare. Single Use – Not possible through dll. Global Multiuse – Have variable not Required to Declare. Global Single Use - Only for exe.
Sandhya.Kishan
- Jun 1st, 2012
Private -only for the Specific Module.
Multi Use - variable we have to declare.
Single Use -not possible through dll.
Global Multiuse -have variable not Required to Declare.
Global Single Use - Only for exe. -
What are the record set types?
RdOpenFowardOnly 0 (Default used only for the read only purpose) RdOpenStatic 1 RdOpenDynamic 2 RdOpenKeySet 3 (Normally used for the live project)
Sandhya.Kishan
- Jun 18th, 2012
There are 4 types of recordsets
Dynamic recordsets
Keyset recordsets
Static Recordset
Forward only Recordset -
Diff types of Lock Types?
RdConcurReadOnly 0 (Default) RdConcurLock 1 (Pessimistic Locking) RdConcurRowver 2 (Optimistic Lociking) RdConcurValues 3 RdConcurBatch 4
Sandhya.Kishan
- Jun 18th, 2012
Different types of lock types:
RdConcurReadOnly 0 (Default)
RdConcurLock 1 (Pessimistic Locking)
RdConcurRowver 2 (Optimistic Locking)
RdConcurValues 3
RdConcurBatch 4 -
Handling Error in Calling chain. This will call the top most error where the error is handled.
Sandhya.Kishan
- Jun 18th, 2012
Handling error in calling chain is used to handle the error when we call the top most error.
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How to trap Data Base Error?
Dim x as RDOError X(0).Des X(1).Number
Sandhya.Kishan
- Jun 18th, 2012
To trap database error we can use PowerBuilder which has a built-in event to capture database errors: it is the DBERROR event in the datawindow.
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What is the difference between Msgbox Statement and MsgboxQ function?
Sandhya.Kishan
- Jun 21st, 2012
Msgbox statement is used to display messages where as a Msgboxq function display a message and return a value when any button in the MsgBox is pressed.
MsgBox is a built in VB function which is used as a statement and MsgBoxQ is a function defined by the user.
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What types of data access have you used.?
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How to add recovery scenario's to Test Settings through script
Sandhya.Kishan
- Jun 21st, 2012
By using "Recovery.GetScenarioName Iter, ScenarioFile, ScenarioName" statement we can add recovery scenarios to test settings.
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How can you tell what kind of object an object variable is holding?
Sandhya.Kishan
- Jun 21st, 2012
We declare an object variable to hold the object.For example, a word processing application may provide an Application object, a Document object, and a Toolbar object.
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What are the tools available for Debuggiu in VB?
Sandhya.Kishan
- Jun 21st, 2012
The tools available for debugging in vb
1.Immediate Window
2.Debug.Print
3.Debug.Assert
4.Break Points
5.single step mode -
Kind of components can be used as DCOM servers?
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What is the max size allowed for Extension in Visual Basic
Frm, bas, cls, res, vbx, ocx, frx, vbp, exe
Sandhya.Kishan
- Jun 27th, 2012
The extension allowed in vb are vbx, ocx, frx, vbp,Frm, bas, cls and res.
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Drag and Drop state numbers and functions?
State 0 – Source control is being dragged with the range of a target. 1 – Out of the range of a target. 2 – One position in the target to another.
Sandhya.Kishan
- Jun 27th, 2012
There are 3 states numbers drag and drop functions
State 0 source control is being dragged with the range of a target.
State 1 out of the range of a target.
State 2 one position in the target to another -
Suppose from form1 to form2 object property settings will arise to ?
Invalid procedure call or argument (Run time error – 5)
Sandhya.Kishan
- Jun 27th, 2012
Form1 to form2 object property settings will arise to run time error or to an invalid argument.
Visual Basic Interview Questions
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