There was only 4 threads with the term "AJAX" in you book forum, and none delt with the AJAX Control Toolkit. In your previous edition, on page 362, you mentioned the rich library of AJAX extensions at www.asp.net/ajax/AjaxControlToolkkit/Samples/
These controls are very useful and I've used them in projects. I realize that Visual Studio 2012 ships differently than 2010, but does that mean these tools are somehow obsolete/incompatible? Why not mention them in this new book version?
I ask because after upgrading the project to Visual Studio 2012, they fail even after I include the add key="ValidationSettings:UnobtrusiveValidationMode" value="None" in the appSettings element in the web.config file.
I was using your Chapter 10 as a reference and it didn't mention anything about the toolkit, so I thought I'd ask here.