[WCF RIA Services Version 1 Service Pack 2 is compatible with either .NET framework 4 or .NET Framework 4.5, and with either Silverlight 4 or Silverlight 5.]
Cancels the operation.
Assembly: System.ServiceModel.DomainServices.Client (in System.ServiceModel.DomainServices.Client.dll)
The default implementation of the SupportsCancellation property always returns false. You must override the SupportsCancellation property and the CancelCore method in order to support cancellation in your operation.
The method invokes both the CancelCore method and the completeAction delegate specified in the constructor. Upon completion of the operation, check the IsCanceled property to determine whether the operation was successfully canceled.
Successful cancellation does not guarantee state changes were prevented from happening on the server.