Delegate for methods that complete asynchronously.
[Visual Basic] Public Delegate Sub AsyncCallback( _ ByVal ar As IAsyncResult _ ) [C#] public delegate void AsyncCallback( IAsyncResult ar ); [C++] public __gc __delegate void AsyncCallback( IAsyncResult* ar );
[JScript] In JScript, you can use the delegates in the NGWS frameworks, but you cannot define your own.
The declaration of your event-handling method must have the same parameters as the AsyncCallback delegate declaration.
The delegate method uses the IAsyncResult to obtain information about the async call.
Namespace: System
Assembly: mscorlib.dll