InvokeAsync Method

ClientBase(Of 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
Assembly:  System.ServiceModel (in System.ServiceModel.dll)

'Declaration
Protected Sub InvokeAsync ( _
	beginOperationDelegate As ClientBase<(Of <(<'TChannel>)>)>..::..BeginOperationDelegate, _
	inValues As Object(), _
	endOperationDelegate As ClientBase<(Of <(<'TChannel>)>)>..::..EndOperationDelegate, _
	operationCompletedCallback As SendOrPostCallback, _
	userState As Object _
)

Parameters

beginOperationDelegate
Type: System.ServiceModel.ClientBase(Of TChannel).BeginOperationDelegate
A delegate that is used for calling the asynchronous operation.
inValues
Type: System.Object()
The input values to the asynchronous call.
endOperationDelegate
Type: System.ServiceModel.ClientBase(Of TChannel).EndOperationDelegate
A delegate that is used to end the asynchronous call after it has completed.
operationCompletedCallback
Type: System.Threading.SendOrPostCallback
A client-supplied callback that is invoked when the asynchronous method is complete. The callback is passed to the ClientBase(Of TChannel).BeginOperationDelegate.
userState
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.

Silverlight

Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

XNA Framework

Supported in: Windows Phone OS 7.0

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

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