ASP.NET AJAX 1.0 Source Code Released
The client-side ASP.NET AJAX JavaScript library is being released under the Microsoft Permissive License (Ms-PL). From now you can freely customize/modify the librarya nd redistribute the derivative versions for both commercial and non-commercial purposes.
The code for the server-side ASP.NET AJAX 1.0 implementation was released this morning. You can download it Microsoft Reference License (Ms-RL). Included with the source code are debugger symbols for the shipped binary, which will allow you to step from your own code into the ASP. NET AJAX library while debugging, with line number and symbol data preserved. Note that the setup installs the source code locally on your machine within the “\Program Files\Microsoft ASP.NET\ASP.NET 2.0 AJAX Extensions\v1.0.61025\Source” directory.