有用链接

NET 4.0中的泛型的协变和逆变 http://www.cnblogs.com/jingzhongliumei/archive/2012/07/02/2573149.html

SQLite入门   http://www.cnblogs.com/NeverGone2012/archive/2012/07/02/Introduce_SQLite.html

C#中的委托与事件  http://www.cnblogs.com/jimmyzhang/archive/2007/09/23/903360.html 

引用参数（ref）与输出参数（out）http://www.cnblogs.com/XiaoAi3/archive/2012/06/24/2560450.html

一步一步学Linq to sql 系列文章   http://www.cnblogs.com/lovecherry/archive/2007/08/13/853754.html

转载于:https://www.cnblogs.com/8023lyf/archive/2012/07/03/2574213.html