This post is specifically for my students of C#.NET Batch (Oct 2011 - Jan 2012). Please find the coding in a DOC file. The file can be downloaded from the link given below. The single files contains: a. Server Side Code b. Factorial Client Handler c. Windows Based Client Code https://skydrive.live.com/redir.aspx?cid=0760ab0f61623b72&resid=760AB0F61623B72!334&parid=760AB0F61623B72!115&authkey=!AGKfRN2PF3G7FFQ