Constructor in c#

http://www.codeproject.com/KB/dotnet/ConstructorsInCSharp.aspx

Generic examples...

http://dotnetperls.com/list

new features of .net framework

http://www.dotnetspider.com/resources/4383-Dot-Net-Framework-Features.aspx

WCF Article

http://www.aspnet101.com/2010/08/windows-communication-foundation-wcf-tutorial/