说明：  这是一个好朋友推荐给我的一本C#教材，看了后，觉得很不错，现在推荐给大家，对于.Net入门是一个很好的教材！
(This is a good friend recommended to me a C# textbook, read, I feel very good, and now recommend it to everyone, for. Net entry is a good material!)