How to retrive an image from database and display it in grideview control?

How to create, activate, work and stop a Multi Thread?

How to define a random number without making an object?

How to acheive UNDO and REDO functions using C#

1. What is an indexer?2. Why we are using indexer?

Original Visual J++ code: public synchronized void Run() {// function body}Ported C# code: class C{public void Run(){lock(this){// function body }}public static void Main() {}}

With regard to versioning, interfaces are less flexible than classes. With a class, you can ship version 1 and then, in version 2, decide to add another method. As long as the method is not abstract (i.e., as long as you provide a default implementation of the method), any existing derived classes continue to function with no changes. Because interfaces do not support implementation inheritance, this...

The following is a response from a developer on the C# compiler team: We get rid of unused locals (i.e., locals that are never read, even if assigned).We get rid of unreachable code.We get rid of try-catch w/ an empty try.We get rid of try-finally w/ an empty try (convert to normal code...).We get rid of try-finally w/ an empty finally (convert to normal code...).We optimize branches over branches:...