Encapsulates the results of an asynchronous operation on a delegate.
Assembly: mscorlib (in mscorlib.dll)
Thetype exposes the following members.
|AsyncDelegate||Gets the delegate object on which the asynchronous call was invoked.|
|AsyncState||Gets the object provided as the last parameter of a BeginInvoke method call.|
|AsyncWaitHandle||Gets a WaitHandle that encapsulates Win32 synchronization handles, and allows the implementation of various synchronization schemes.|
|CompletedSynchronously||Gets a value indicating whether the BeginInvoke call completed synchronously.|
|EndInvokeCalled||Gets or sets a value indicating whether EndInvoke has been called on the current .|
|IsCompleted||Gets a value indicating whether the server has completed the call.|
|NextSink||Gets the next message sink in the sink chain.|
|AsyncProcessMessage||Implements the IMessageSink interface.|
|Equals(Object)||Determines whether the specified Object is equal to the current Object. (Inherited from Object.)|
|Finalize||Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)|
|GetHashCode||Serves as a hash function for a particular type. (Inherited from Object.)|
|GetReplyMessage||Gets the response message for the asynchronous call.|
|GetType||Gets the Type of the current instance. (Inherited from Object.)|
|MemberwiseClone||Creates a shallow copy of the current Object. (Inherited from Object.)|
|SetMessageCtrl||Sets an IMessageCtrl for the current remote method call, which provides a way to control asynchronous messages after they have been dispatched.|
|SyncProcessMessage||Synchronously processes a response message returned by a method call on a remote object.|
|ToString||Returns a string that represents the current object. (Inherited from Object.)|
The class is used in conjunction with asynchronous method calls made using delegates. The IAsyncResult returned from the delegate's BeginInvoke method can be cast to an . The has the AsyncDelegate property that holds the delegate object on which the asynchronous call was invoked.
For more information about BeginInvoke and asynchronous calls using delegates, see Asynchronous Programming Using Delegates.
The following example demonstrates how to use the AsyncWaitHandle property to get a WaitHandle, and how to wait for an asynchronous call on a delegate. The WaitHandle is signaled when the asynchronous call completes, and you can wait for it by calling the WaitOne method.
The example consists of two classes, the class that contains the method which is called asynchronously, and the class that contains the Main method that makes the call.
For more information and more examples of calling methods asynchronously by using delegates, see Calling Synchronous Methods Asynchronously.
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.