How to implement gmail like chatting in our asp.net website thanks in advance

Hi waghmarenm 
 
If you want use ASP.NET to build a chat application, I would like to suggest you try to check the following articles with examples:
 
 Building an AJAX based chat room in ASP.NET
http://www.codeproject.com/KB/ajax/UChat.aspx

 
Simple chat application for ASP.NET
http://www.codeproject.com/KB/applications/SimpleChat.aspx

 
Build a Web Chat Application using ASP.Net 3.5, LINQ and AJAX (in C# 3.5 or VB 9.0)
http://www.codeproject.com/KB/aspnet/WebChatAsp35LinqAjax.aspx

 
Multi User Chat Room Using ASP.NET 2.0 and AJAX
http://www.codeproject.com/KB/aspnet/ASPNetChat.aspx


 
And if you want to add the third-party Chat application to your web, I would like to suggest you check the following site which provides the service:
 
Gabbly Chat:

http://gabbly.com/
 
Thanks.

 how to create a chat application using asp.net ,C#.(with out using AJAX)

thanks in advance