Operation not supported in the WCF Test Client

Question

I created a WCF service and to the default service I added another operation contract on the main DataContract:

[OperationContract]
void DoSomething(UserData         


        

Answer 1

Does the service work if you create a test client(like a console app) and add a service reference to the wcf? If it does, then your datacontract probably has one of those types not supported by WCF Test client.

See this related issue