1.C # technology reveals a more in-depth introduction to the C # language itself, covering the various aspects of C #, where there is a programming language foundation, there is a simple object-oriented programming concept, you can understand. 2..net framework Design. The book to read under the .NET, the relevant technology on the .NET platform. 3.Programing with C # The C # Windows programming is more detailed, it is said to have now a third edition. Details reference www.china-pub.com