Invalid postback or callback argument RRS feed

  • Question

  • User1741069310 posted

    How Could I fix it?

    [ArgumentException: 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.]
       System.Web.UI.ClientScriptManager.ValidateEvent(String uniqueId, String argument) +9851830
       System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument) +125
       System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +12
       System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +15
       System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +35
       System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1639

    Tuesday, May 8, 2018 2:36 PM

All replies

  • User475983607 posted

    This error pops up when you modify a list control in JavaScript.  The error message tells you what to do.

    Tuesday, May 8, 2018 7:41 PM