This concludes the three-part series of "C# in Action." You've learned many of the basics of creating a C# program in these articles. Building upon that, you can craft a simple GUI in Windows Forms that makes a program more palatable. This article showed how to create, deploy, and invoke a Web service. There is much more to learn about C#, though, and I encourage you to build upon the bits presented here by perusing related information in the documentation, online resources, and books.