.NET Framework Standard Library Annotated Reference, Volume 1: Base Class Library and Extended Numerics Library

Type Summary

						public interface IAsyncResult
{
  // Properties
     object AsyncState { get; }
     WaitHandle AsyncWaitHandle { get; }
     bool CompletedSynchronously { get; }
     bool IsCompleted { get; }
}

KC Cancel is a very often-requested member. We decided not to add it as not all async operations can reliably support cancellations. It's bad to have interface members that cannot be implemented by a large percentage of types implementing the interface. Interface design is extremely difficult. It requires perfect balance between too few members (which makes the interface useless) and too many members, which makes the interface too hard or even impossible to implement in many cases. JR I like the asynchronous programming model a lot and I recommend that everyone ...