When I sort the ID twice.

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  1. santhosh
    santhosh avatar
    7 posts
    Member since:
    Aug 2010

    Posted 10 Aug 2010 Link to this post


    Invalid postback or callback argument.  Event validation is enabled using <pages enableEventValidation="true"/> in configuration or <%@ Page EnableEventValidation="true" %> in a page.  For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them.  If the data is valid and expected, use the ClientScriptManager.RegisterForEventValidation method in order to register the postback or callback data for validation.

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