forms
http://www.cnblogs.com/bomo/p/3309766.html
http://www.cnblogs.com/leonwang/archive/2013/03/05/2944575.html
http://www.cnblogs.com/zxjyuan/archive/2009/08/21/1551196.html
http://blog.sina.com.cn/s/blog_666b934501019doz.html
http://msdn.microsoft.com/zh-cn/library/ff398049(v=vs.100).aspx
http://msdn.microsoft.com/zh-cn/library/yh26yfzy(v=vs.100).aspx
http://msdn.microsoft.com/zh-cn/library/5k850zwb(v=vs.100).aspx