Pretty Good Article About Partial Page Post And Ajax

I use the Telerik Ajax controls, which though are now based on MS AJAX under the hood still have their own client side enhanced API. But I don't have the Telerik Rad Controls at home, so I was researching how to do things the MS way when I stumbled upon the following article, which might be of some use to you.

http://aspnet.4guysfromrolla.com/articles/052808-1.aspx