Int32.Parse() vs Convert.ToInt32() vs Int32.TryParse()

http://www.codeproject.com/KB/cs/AgileWare_Convert_Int32.aspx

When to use Abstract Class vs when to use Interface

http://www.codeproject.com/KB/architecture/Abstract_Interface.aspx
http://aspalliance.com/1213_Working_with_Abstract_classes_Sealed_Classes_and_Interfaces_in_C.all

Htmlcontrols vs Webcontrols

http://aspalliance.com/258
http://odetocode.com/Articles/348.aspx

Custom Controls

http://dotnetslackers.com/articles/aspnet/ASPNETCustomControlsPart1.aspx

http://en.iver.com.mx/index.php/blog/show/controls_ASPNET_3.html

Menu

http://www.stunicholls.com/menu/pro_dropdown_2.html
http://www.stunicholls.com/menu/pro_dropdown_1.html

Media - Print
http://www.javascriptkit.com/dhtmltutors/cssmedia2.shtml
http://meyerweb.com/eric/articles/webrev/200001.html
http://www.4guysfromrolla.com/demos/printMediaCss.html
http://www.eggheadcafe.com/community/aspnet/3/10034702/how-to-print-part-of-web.aspx

Calendarextender[Format="dd-MMM-yyyy"]
http://www.asp.net/ajax/ajaxcontroltoolkit/Samples/Calendar/Calendar.aspx
System.DateTime.Now.ToString("dd-MMM-yyyy hh:mm:ss tt")

Delegates & Events

http://www.csharp-station.com/Tutorials/Lesson14.aspx
http://www.functionx.com/csharp/Lesson16.htm

For C# Asp.net examples and articles

http://www.csharpkey.com/aspnet/Lesson16.htm

Handle events on user control

http://asp.net-tutorials.com/user-controls/events/
http://www.dotnetfunda.com/articles/article569-capture-buttons-click-event-of-user-control-in-the-page.aspx