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.
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 _ ) 'Usage Dim beginOperationDelegate As ClientBase<(Of <(TChannel>)>)..::.BeginOperationDelegate Dim inValues As Object() Dim endOperationDelegate As ClientBase<(Of <(TChannel>)>)..::.EndOperationDelegate Dim operationCompletedCallback As SendOrPostCallback Dim userState As Object Me.InvokeAsync(beginOperationDelegate, _ inValues, endOperationDelegate, _ operationCompletedCallback, userState)
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.
- Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see Using Libraries from Partially Trusted Code.
Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.