September 2007 - Posts
Invalid Postback with Ajax Update Panels
I've been getting a strange error lately when enabling some complex functionality using update panels. The error looks like this: 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...
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