SetPartialRenderingMode can only be called once?

Posted by lucian.jp on Stack Overflow See other posts from Stack Overflow or by lucian.jp
Published on 2009-05-27T18:38:00Z Indexed on 2010/05/03 8:58 UTC
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ASP.NET

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error-message

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ajaxcontroltoolkit

I have a asp.net web form full of ajax. Every time a postback is made, the server event execute correctly, but when the page is rendering I get this error :

Error : Sys.WebForms.PageRequestManagerServerErrorException: SetPartialRenderingMode can only be called once.

A search with SetPartialRenderingMode on google was unsuccessful. It seems it is related to AjaxControlToolkit.

I have created a simple demo project that reproduce the problem. You can find it here (VS 2008 .NET 3.5).

Note that you only see the error in IE7, it doesn't work in FF either but no error appear.

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