13.3. Implementing the Service
There are two options for implementing the messages we designed. First, you could create a WSDL document using the messages schemas from Listing 13.1, then run wsdl.exe –server on this WSDL to generate a Web service stub implementation. If you do this, you are essentially defining the interface (the WSDL) first, and then implementing it—which is exactly what I explained in Chapter 8.
Alternatively, you can code the Web service directly and use a combination of attributes on the service and on each Web method to ensure the emitted WSDL adheres to the message specification in Listing 13.1. In Chapter 8, I covered the interface-based approach, so I will take the second approach here. But if you are comfortable with ...
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