1.ViewState用法和原理
ViewState control In Asp.net2.0 or Asp.net3.5
http://www.codeproject.com/KB/aspnet/BegViewState.aspx
ViewState control In Asp.Net 4.0
http://www.codeproject.com/Articles/81489/ViewState-Control-in-ASP-NET-4-0.aspx
2.Session用法和原理
http://www.codeproject.com/KB/aspnet/ExploringSession.aspx
3.Caching用法和原理
http://www.codeproject.com/KB/aspnet/ExploringCaching.aspx
4.Cookies用法和原理