C#之OOD

http://blog.csdn.net/hliq5399/article/details/6305335

http://www.cnblogs.com/max007super/archive/2009/02/09/1386980.html

http://www.cnblogs.com/weihai2003/archive/2008/10/24/1319003.html

http://stackoverflow.com/questions/1327544/what-is-the-equivalent-of-javas-final-in-c/1327549#1327549

http://www.cnblogs.com/chenssy/p/3388487.html