CSharpLanguageReference(VBL)

说明：  是一个介绍c#编程的很好的参考书，详细讲述了c#的基础知识和高级编程方面的应用。英文版，pdf文档。
(Is an introduction c# Programming very good reference book, a detailed account of the c# The basic knowledge and the application of high-level programming. The English version, pdf file.)