Thanks for the reply. This is just what I was looking for. I have it working how I want on the client. But this type of communication doesn't seem to work on the server. Since the SoapServerMessage is unavailable during BeforeDeserialization, I can't access the web service to retrieve the properties. I believe this is because the SoapExtension actually executes before any of the web service code. I had hoped to put some initialization in the constructor of the web service and then look at the properties in the SoapExtension, but I'm not sure its possible. Any help here?
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