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• Re: Validation of viewstate MAC failed / The state information is invalid for this page and might be corrupted

  Hi Joteki, The error is ever present in my case. I get the typical "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

  Posted to State Management (Forum) by JustDrums on 1/31/2006

• Re: Validation of viewstate MAC failed / The state information is invalid for this page and might be corrupted

  Hey Crystal, I'm happy to see that I am not the only one experiencing this with .net 2.0. I love this new dev environment but it appears as though little bugs are still present with designer based controls. I'm using a gridview bound to a SqlSource, have tried all the workarounds (MachineKey, etc) and I am still getting the error on what appears to be anything postback. When I sort my grid, the error occurs, and I assume it has to do with viewstate. I read a MS article somewhere that explained how

  Posted to State Management (Forum) by JustDrums on 1/27/2006