anyone know about this error.i m implementing editable gridview using <itemtemplate>, <edititemtempla te>.....
System.Argument Exception: Invalid postback or callback argument. Event validation is enabled using <pages enableEventVali dation="true"/> in configuration or <%@ Page EnableEventVali dation="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 ClientScriptMan ager.RegisterFo rEventValidatio n method in order to register the postback or callback data for validation.
System.Argument Exception: Invalid postback or callback argument. Event validation is enabled using <pages enableEventVali dation="true"/> in configuration or <%@ Page EnableEventVali dation="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 ClientScriptMan ager.RegisterFo rEventValidatio n method in order to register the postback or callback data for validation.