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Learn how to extend your ASP.NET AJAX applications using the ASP.NET AJAX Control Toolkit. ASP.NET AJAX Control Toolkit: Installation and getting started is a video that starts with the basics, including downloading and installing the toolkit.
Here are some choice example videos:
- ASP.NET AJAX Control Toolkit
- Learn how to extend your ASP.NET AJAX applications using the ASP.NET AJAX Control Toolkit. We will also see how ASP. Net’s standard DropDownList can become AJAX-enabled using the Cascading Dropdown control extender from the ASP.NET AJAX Control Toolkit
- Exploring ASP.NET AJAX – Part II
- After exploring ASP.NET AJAX Extensions and the Update Panel control, here we start exploring the other handy controls such as Update Progress, Triggers etc., Also, we will explore how Microsoft ASP.NET AJAX helps web developers make network callbacks dire
Also, read Kazi Manzur Rashid's excellent article on ASP.NET AJAX Control Development.
There is a large number of videos and screencasts that delve deep into ASP.NET AJAX. Be sure to check them out!