What are these extra parameters in my ASMX Proxy Methods?

Question

If I add a web reference from a .NET 1.1 client to a WCF service, the proxy methods generated at the client contain an extra parameter ending with the suffix \'Specified\' f

Answer 1

You probably need t osay that your parameters are required

[OperationContract] 
string HelloWorld([RequiredDataParameter] string foo,
                  [RequiredDataParameter] int bar);