XML-DA method to asynchronously cancel a subscription with either an XML-DA or OPC-DA server.
Syntax
Visual Basic (Usage) | Copy Code |
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Dim instance As OpcXmlDA
Dim asyncResult As IAsyncResult
Dim ClientRequestHandle As String
instance.EndSubscriptionCancel(asyncResult, ClientRequestHandle) |
Parameters
- asyncResult
- The reference to the pending asynchronous request to wait for.
- ClientRequestHandle
- If supplied by the client in the request then this value is echoed back in the response.
Requirements
Target Platforms:Windows XP Professional, Windows Server 2003 family, Windows Vista, Windows 7, Windows Server 2008 family
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See Also