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InvokeAsync Method

ClientBase<TChannel>.InvokeAsync Method

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

Namespace:  System.ServiceModel
Assemblies:   System.ServiceModel.Primitives (in System.ServiceModel.Primitives.dll)
  System.ServiceModel (in System.ServiceModel.dll)

protected void InvokeAsync(
	ClientBase<T>.BeginOperationDelegate beginOperationDelegate,
	Object[] inValues,
	ClientBase<T>.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 InvokeAsync(BeginOperationDelegate, Object, EndOperationDelegate, SendOrPostCallback, Object), and when each operation is completed, your event handler can determine which instance of the operation raised the completion event.

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5 SP1, 3.0 SP1

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

.NET for Windows Phone apps

Supported in: Windows Phone 8.1, Windows Phone Silverlight 8.1, Windows Phone Silverlight 8

Portable Class Library

Supported in: Portable Class Library
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