References a method executed after an asynchronous operation is completed.
public delegate void AsyncCompletedHandler( AsyncOperationResult result );
Public Delegate Sub AsyncCompletedHandler( result As AsyncOperationResult )
The AsyncCompletedHandler delegates are passed to asynchronous methods as their asyncCompleted parameters. The referenced method is executed after the operation is completed, allowing you to obtain the operation result (via the result parameter), and perform other required actions.