ASP.NET error insert on DB with GridView

Question

I'm trying to insert on my Access BD with a GridView Footer, but when I make a submit, this give me an error

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.

I just have this on my asp form <%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm2.aspx.cs" Inherits="tts.WebForm2" %>

and this in my GridView <asp:GridView ID="dataGridView1" horizontalalign="Center" runat="server" AutoGenerateColumns="False" CellPadding="4" ForeColor="#333333" GridLines="None" Width="533px" BorderColor="#999966" CellSpacing="5" ShowFooter="True"> <RowStyle BackColor="#F7F6F3" ForeColor="#333333" HorizontalAlign="Center" />

[ArgumentException: 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.]
System.Web.UI.ClientScriptManager.ValidateEvent(String uniqueId, String argument) +9732654
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

This error has nothing to do with a database insert or a GridView. Are you manipulating input controls with javascript perhaps? — VDWWD
– VDWWD, Commented May 11, 2017 at 12:32
@VDWWD no, i'm not using javascript or something like that. Just ASP.NET — Cesar Gutierrez Davalos
– Cesar Gutierrez Davalos, Commented May 11, 2017 at 12:45

Manfred Radlwimmer · Accepted Answer · 2017-05-11 15:32:46Z

1

In you aspx file you should put the first line as this:

<%@ Page EnableEventValidation="false" %>

edited May 11, 2017 at 15:32

Manfred Radlwimmer

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answered May 11, 2017 at 14:07

Ramesh Kumar

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Cesar Gutierrez Davalos Over a year ago

I've this problem too, but is in spanish the question [es.stackoverflow.com/a/68717/40111] hope you can help me

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