InvokeAsync Method

ClientBase<TChannel>.InvokeAsync Method (ClientBase<TChannel>.BeginOperationDelegate, Object[], ClientBase<TChannel>.EndOperationDelegate, SendOrPostCallback, Object)


Provides support for implementing the event-based asynchronous pattern. For more information about this pattern, see Event-based Asynchronous Pattern Overview.

Namespace:   System.ServiceModel
Assembly:  System.ServiceModel (in System.ServiceModel.dll)

protected void InvokeAsync(
	ClientBase<TChannel>.BeginOperationDelegate beginOperationDelegate,
	object[] inValues,
	ClientBase<TChannel>.EndOperationDelegate endOperationDelegate,
	SendOrPostCallback operationCompletedCallback,
	object userState


Type: System.ServiceModel.ClientBase<TChannel>.BeginOperationDelegate

A delegate that is used for calling the asynchronous operation.

Type: System.Object[]

The input values to the asynchronous call.

Type: System.ServiceModel.ClientBase<TChannel>.EndOperationDelegate

A delegate that is used to end the asynchronous call after it has completed.

Type: System.Threading.SendOrPostCallback

A client-supplied callback that is invoked when the asynchronous method is complete. The callback is passed to the ClientBase<TChannel>.BeginOperationDelegate.

Type: System.Object

The userState object to associate with the asynchronous call.

Provide a unique value, such as a GUID or hash code, in the userState parameter for each call to M:System.ServiceModel.ClientBase`1.InvokeAsync(System.ServiceModel.ClientBase.BeginOperationDelegate,System.Object[],System.ServiceModel.ClientBase.EndOperationDelegate,System.Threading.SendOrPostCallback,System.Object), and when each operation is completed, your event handler can determine which instance of the operation raised the completion event.

Universal Windows Platform
Available since 4.5
.NET Framework
Available since 3.0
Portable Class Library
Supported in: portable .NET platforms
Available since 2.0
Windows Phone Silverlight
Available since 7.0
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