Applying the Update Panel on Master Page

Dear Jai,

Use windows.location.href.

http://forums.asp.net/p/1106490/1693942.aspx

HTH,
Suprotim Agarwal

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http://www.dotnetcurry.com
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If you want to do this you will need to stay on the same page, meaning your Treeview should not cause a redirect but OnSelectedNodeChanged event you would need to read a content of the new page and display it. I don't think this is a good idea though

Any idea how to do that?

Checkout this post:
http://geekswithblogs.net/rashid/archive/2007/08/11/Loading-UserControl-Dynamically-in-UpdatePanel.aspx