Invalid call back and post back problem

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Sys.WebForms.PageRequestManagerServerErrorException: 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.
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pls give me a fast reply

Posted 24-Jan-10 18:26pm

amitthakkar1987

Updated 21-Aug-18 4:47am

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8 solutions

Solution 10

in the Page_Load method just put this
if(!IsPostBack)
{
///Your Code....
}
You won't get any error like this.....

Posted 23-Dec-12 21:49pm

RAKESHSPATHAK

Solution 7

Page_PreRender works .

Posted 16-Jun-12 21:11pm

sajithss

Updated 16-Jun-12 21:13pm

v2

Solution 8

Usually the problem resides in your Page_Load code:
If you create control in code-behind, or populate by code-behind a control defined in aspx/ascx page, you must re-create it in Page_Load (always, not only if not IsPostBack)

Posted 6-Sep-12 4:01am

roberto villari

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fjdiewornncalwe 6-Sep-12 10:18am

This question is over 2.5 years old. Please don't add more answers to old questions like this.

Solution 13

My problem was solved when cancel event at end of grid event at server side.

protected void grdEducation_RowEditing(object sender, GridViewEditEventArgs e)
{
  // do your processing ...

  // at end
  e.Cancel = true;
}

Posted 21-Aug-18 4:47am

zolfaghari

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This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Narsimlu Keshagouni · Accepted Answer · 2011-01-18T01:02:00

Solution 4

ScriptManager may not find the control when binding is done in Page_Load instead bining the data to control (like dataset) in Page_PreRender will solve the issue.

Posted 18-Jan-11 1:02am

Narsimlu Keshagouni

Comments

vedprakash289 10-Jun-12 10:10am

Thankyou Narsimlu kashagouni it solved my problem thank you very much

Sandeep Mewara · Accepted Answer · 2010-01-24T18:57:00

Solution 2

Try having EnableEventValidation = false for the page you are having this issue.

Further, make sure your Web.Config file is up with Ajax scripts.
Also, make sure - Scriptmanagers partial rendering is enabled

Posted 24-Jan-10 18:57pm

Sandeep Mewara

Comments

Ali Al Omairi(Abu AlHassan) 17-Feb-11 4:23am

Sir, How about enabling event validation on control level? do you have any idea for that?

100 :rose: ;)

Rod Kemp · Accepted Answer · 2010-01-24T18:51:00

Solution 1

You could do as the error message suggests and use the ClientScriptManager.RegisterForEventValidation[^] method in order to register the postback or callback data for validation.

Or you could just set EnableEventValidation for the page to false.

Posted 24-Jan-10 18:51pm

Rod Kemp

avadhesh40 · Accepted Answer · 2010-03-26T19:49:00

Solution 3

Invalid call back and post back problem

When you are using griedview or datalist or repeater control then when you bind this control then you have to put this in if(!ispostback()){....}

By

Posted 26-Mar-10 19:49pm

avadhesh40

Comments

honey4bee 24-Sep-12 6:25am

Correct Ans......
using above that resolved my problem

kananjookkwww 4-Dec-12 7:34am

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kananjookkwww 4-Dec-12 7:34am

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kananjookkwww 4-Dec-12 7:34am

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Invalid call back and post back problem

8 solutions

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Solution 2

Solution 1

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Solution 13

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Invalid call back and post back problem

8 solutions

Solution 4

Solution 2

Solution 1

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Solution 10

Solution 7

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Solution 13

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