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Invalid postback or callback argument. Event validation is enabled using 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

when i submit my form data then occur this error

Krunal Mehta
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    Possible duplicate of [Invalid postback or callback argument](http://stackoverflow.com/questions/103560/invalid-postback-or-callback-argument) – scott_lotus Jun 10 '16 at 07:46
  • Possible duplicate of: http://stackoverflow.com/questions/103560/invalid-postback-or-callback-argument – scott_lotus Jun 10 '16 at 07:46

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