ASP.Net Ajax, UpdatePanel, PageRequestManager, Dan Wahlin

I had to rewrite the entire post. It started from a nice article by a guy called Dan Wahlin and it ended with three (at least? :) ) separate links to his articles and his blog entered in my Technorati favourites.

Here are links to what appears to be a series about Asp.Net Ajax, really informative and concise:

Update Panel properties explained: Implement UpdatePanel Properties

Implement visual cues during updates:Inform Users With Customized Visual Feedback

Minimize the load on the server on many subsequent clicks or refresh requests:Coping With Click-Happy Users

Here is a complete list of the links in the same series:
ASP.NET AJAX Articles