In this chapter you learned what a Web service is and how you can set it up to perform services on the World Wide Web. You worked through a tutorial for creating a simple Web service for retrieving an order using ADO.NET and ASP.NET. You then created a Web service that allowed you to enter a customer for the order using XML and ADO.NET. In the end, you saw how to update and delete data from a database through a Web service. Using the same methodology, you can develop Web services, which can implement data access functionality for your clients. The next chapter covers data binding in ASP.NET. You'll see how to use different Web server controls in data binding operations. This chapter is based on real-world usage of Web server data-bound controls. So, you'll learn a lot of good stuff that you can use in your applications.