ClientBase<TChannel>.InvokeAsync Method
Microsoft Silverlight will reach end of support after October 2021. Learn more.
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)
Syntax
'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 _
)
protected void InvokeAsync(
ClientBase<(Of <(<'TChannel>)>)>..::..BeginOperationDelegate beginOperationDelegate,
Object[] inValues,
ClientBase<(Of <(<'TChannel>)>)>..::..EndOperationDelegate endOperationDelegate,
SendOrPostCallback operationCompletedCallback,
Object userState
)
Parameters
- beginOperationDelegate
Type: System.ServiceModel.ClientBase<TChannel>.BeginOperationDelegate
A delegate that is used for calling the asynchronous operation.
- inValues
Type: array<System.Object[]
The input values to the asynchronous call.
- endOperationDelegate
Type: System.ServiceModel.ClientBase<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<TChannel>.BeginOperationDelegate.
- userState
Type: System.Object
The userState object to associate with the asynchronous call.
Remarks
Provide a unique value, such as a GUID or hash code, in the userState parameter for each call to InvokeAsync(BeginOperationDelegate, array<Object[], EndOperationDelegate, SendOrPostCallback, Object), and when each operation is completed, your event handler can determine which instance of the operation raised the completion event.
Version Information
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
Platforms
For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.