ASP .NET AJAX by Cbristian Wenz ebook free download

 Those who are using ASP.NET and would like to take their applications a step further through the Ajax technology, and those who are using another technology but are interested in the ASP.NET AJAX
framework. It is also suitable for JavaScript programmers who would like to avoid some of the headaches caused by the necessity of writing cross-browser code.
The languages used in this book are C# and JavaScript. If you need background on these languages,
O’Reilly has some solid introductions to both, including Learning C# 2005, by Jesse Liberty and Brian MacDonald, and Learning JavaScript, by Shelley Powers.