Summary

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In this chapter, you learned how to build a client for a Web service using Visual Studio .NET. You learned how to import a WSDL document and generate a Web service proxy from this client. You also learned some ways of handling error conditions and how to pass complex data types, ADO.NET DataSet objects, and XML documents.

The chapter also covered the client requirements for accessing secure, stateful, and transactional Web services. You learned how the client-side proxy enables asynchronous calls to be made to any Web service and how to directly use the wsdl.exe utility to set specific namespaces for proxy classes. We examined the interaction between Web services and .NET Remoting clients and servers based on XML and HTTP. We also looked at how to create a Web service client to talk to a .NET Remoting server and a .NET Remoting client to talk to an ASP.NET Web service.

Finally, the chapter examined the use of the DISCO protocol to expose specific groups of Web services and to import multiple Web services into a client application. We also covered the use of UDDI as a central repository of Web service information, and we created a skeleton UDDI client.

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