Programmers will find this a useful text for learning the details of the C# language and then using the language in the .NET class framework. The book teaches the basic language of C#, the fundamentals of building classes, and class and interface inheritance. The .NET class library is introduced, followed by discussion of input and output, file and directory manipulation, regular expressions, sockets and thread programming, drag-and- drop Windows forms, web forms development, and ASP.NET. Lippman is an author with considerable experience as a programmer and consultant. Annotation c. Book News, Inc., Portland, OR (booknews.com)