Hi,
I am gettting this error in production. I was not able to find out what is causing this . I don't even know what page is causing this error. The application works fine in test. But in production it gives this error to the users.(i get email whenever the user gets this error). How can find out what is causing this error?
Invalid postback or callback argument. Event validation is enabled using in configuration or 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.
at System.Web.UI.ClientScriptManager.ValidateEvent(String uniqueId, String argument) at System. ...
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