cshart是Microsoft Visual Studio.NE的一部分，本身没有类库，本书对这门语言的基本特征，规则及异常现象进行具体说明,有时也涉及运算方式。-c sharp is part of Microsoft Visual Studio.NE, they do not have any library, this book about the basic characteristics of language, rules and specific abnormalities that are sometimes involved in the way computing.