CancelMessage Method
Will cancel the specified message.
Syntax
[VB.NET] Public Sub CancelMessage(ByVal MessageId As String)
[C#] public void CancelMessage(string messageId);
Remarks
This method will cancel the message stored on the SMPPServer under the value in MessageId.
NOTE: This method has a corresponding asynchronous version (CancelMessageAsync) for use in the WinRT environment.