Recently study .NET technology, ready to write a relatively large data input module with C #. I have seen Jeffery Richter Applied Microsoft .NET Framework Programming, Charles Petzold's Programming Microsoft Windows with C # and some other .NET information. Richter's Book of Book, most. Net technology includes, but unfortunately, there is a bit of a few places, it is more difficult to understand; PetZold's book includes almost all contents of .NET in Windows programming, the code included in the book in VS The .NET can be run correctly, but those code is not written in ways recommended by vs.net, he uses all the code to operate the changes in the form, and there is no visualized control, and the content is good. Now relive to Richter's book, prepare to start writing code in October.