AsyncResult Class


Encapsulates the results of an asynchronous operation on a delegate.

Namespace:   System.Runtime.Remoting.Messaging
Assembly:  mscorlib (in mscorlib.dll)


type AsyncResult = 
        interface IAsyncResult
        interface IMessageSink


Gets the delegate object on which the asynchronous call was invoked.


Gets the object provided as the last parameter of a BeginInvoke method call.


Gets a WaitHandle that encapsulates Win32 synchronization handles, and allows the implementation of various synchronization schemes.


Gets a value indicating whether the BeginInvoke call completed synchronously.


Gets or sets a value indicating whether EndInvoke has been called on the current AsyncResult.


Gets a value indicating whether the server has completed the call.


Gets the next message sink in the sink chain.

System_CAPS_pubmethodAsyncProcessMessage(IMessage, IMessageSink)

Implements the IMessageSink interface.


Determines whether the specified object is equal to the current object.(Inherited from Object.)


Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.(Inherited from Object.)


Serves as the default hash function. (Inherited from Object.)


Gets the response message for the asynchronous call.


Gets the Type of the current instance.(Inherited from Object.)


Creates a shallow copy of the current Object.(Inherited from Object.)


Sets an IMessageCtrl for the current remote method call, which provides a way to control asynchronous messages after they have been dispatched.


Synchronously processes a response message returned by a method call on a remote object.


Returns a string that represents the current object.(Inherited from Object.)

The AsyncResult 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 AsyncResult. The AsyncResult 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.

No code example is currently available or this language may not be supported.
No code example is currently available or this language may not be supported.

.NET Framework
Available since 1.1

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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