Damian Mehers' Blog Xamarin from Geneva, Switzerland.


ScreenCast: How to create and use an ASP.NET AJAX Control Extender

In this 13 minute video I walk through creating and deploying an example ASP.NET AJAX Control Extender.

The example extender automatically disables buttons when they are clicked, to stop people clicking them twice (for example on a purchase form).  Implementing this isn't as obvious as you might think, and involves cloning.

Screenshot from the video

I do absolutely everything from scratch including writing the server-side and browser-side code, and creating a web site to test the extender.

The video can be viewed/downloaded here.

Please make sure you have sound playing since I talk through a lot of what I am doing.

Filed under: AJAX Leave a comment
Comments (4) Trackbacks (2)
  1. Hi, the link seems to be broken, could you repost?

  2. Hello Pedro,

    I’ve just checked at they work for me … can you try again? Is it possible you are behind a firewall that is blocking access? Perhaps right-click on the link and save the WMV file to disk…


  3. Nice, thanks!

    If you pause the thread in server-side code, why does the browser wait?


  4. Just wondering if you could post the source for me please? Been tearing my hair out until I came across your blog.

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