Rank: Member
Joined: 12/1/2008(UTC)
Posts: 31
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I get this on the Addressbook edit screen when a change is made to any of the drop down boxes on the page. 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. Can someone help tell me why. Thanks in Advance Dan
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Rank: Member
Joined: 12/1/2008(UTC)
Posts: 31
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I have found that if you show fax on your required fields you get this. Only on Addressbook_Edit.
Can anyone tell me why?
Thanks in Advance.
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Rank: Member
Joined: 12/23/2003(UTC)
Posts: 909
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