Value

A System.Threading.WaitHandle that is signaled when an asynchronous operation completes.

Remarks

Operation

The object returned by IAsyncResult.AsyncWaitHandle can be allocated in advance or on demand. However, once allocated it is required to be kept alive until the user calls a method that ends the asynchronous operation, such as System.IO.FileStream.EndRead(IAsyncResult). Only after the operation completes or is canceled, can the object be disposed of.

Note: WaitHandle supplies methods that support waiting for synchronization objects to become signaled, such as System.Threading.WaitHandle.WaitOne(int, bool) .

This property is read-only.

Usage

Clients that wait for the operation to complete (as opposed to polling), use this property to obtain a synchronization object to wait on.

Requirements

Namespace: System
Assembly: mscorlib (in mscorlib.dll)
Assembly Versions: 1.0.5000.0, 2.0.0.0