All abt Delegates:::::::::::
http://www.codeproject.com/csharp/event_fundamentals.asp#3.1DefinitionandUsageofDelegates3

All abt Web.config file::::::::
http://www.dotnethero.com/hero/application/webconfig.aspx?nmx=5_1

All abt global.asax file:::::::::::
http://www.dotnethero.com/hero/application/globalasax.aspx?nmx=5_2

Dynamic Loading of User Control with ViewState Preserved:::::::::::::::
http://www.aspnet4you.com/Articles.aspx?ArticleID=5032

To Copy a datatable 2 another:::::::::::
http://www.dotnet247.com/247reference/msgs/48/243916.aspx

To add a new column @ a particular index::::::
http://blah.winsmarts.com/2006/05/20/loadcontrol-a-usercontrol--and-pass-in-constructor-parameters.aspx