Is anyone can direct me to a good tutorial about creating an AJAX based applications.
There are some examples on using AJAX with AJAX.NET. Also, you may want to check out the ATLAS section of this site.
ASPInsider | Microsoft MVP, ASP.NET
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This guy has been working on comparing all the different AJAX options, its a pretty good read
"If you make it idiot proof, they'll build a better idiot"
Thanks, I will look at it.