title: How to create chatbox and notification system using C# ASP.NET
body: <p>I'm working on a SocialNetwork WebApplication and I don't know how to create a working chatbox and notification system like Facebook, I searched the web alot and I couldn't find anything helpful to start with, the problem is I don't know a good way to send feedback immediately to user when there is change in database.</p>
  
  <p>EDIT: I don't want to do it using ajax, if there is anyway someone can give me an example using socketprogramming ?</p>