Question

Can anyone explain the difference between Delegates and BackgroundWorker?In which case Backgroundworker is more efficient than Delegate?Since we are having asynchronous delegate what is the need to use BackGroungWorker.

Answer 1

BackgroundWorker:

The BackgroundWorker class allows you to run an operation on a separate, dedicated thread.

Delegate:

A delegate is a type that defines a method signature. … Delegates are used to pass methods as arguments to other methods.

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The question of which one to use has nothing to do with efficiency.

BackgroundWorker is a wrapper that simplifies working with threads, you can use async delegates just as well, but managing them correctly is much more difficult. Or, from MSDN:

When you want a responsive UI and you are faced with long delays associated with such operations, the BackgroundWorker class provides a convenient solution.