Click here to Skip to main content

devausha asked:

Open original thread
In my webform I am using Jquery and Javascript for popup window and clientside validation.
 
In the popup window I add the combobox item using javascript. It's all works well.
But When I save the form
The following error occurs
 
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.
 

If I remove the update panel, when I select newly additem in the combobox, the above error is occured
 
Why? help me....
Tags: C#, ASP.NET

Preview



When answering a question please:
  1. Read the question carefully.
  2. Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
  3. If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Let's work to help developers, not make them feel stupid.
Please note that all posts will be submitted under the The Code Project Open License (CPOL).



Advertise | Privacy | Mobile
Web04 | 2.8.141223.1 | Last Updated 26 Mar 2009
Copyright © CodeProject, 1999-2014
All Rights Reserved. Terms of Service
Layout: fixed | fluid

CodeProject, 503-250 Ferrand Drive Toronto Ontario, M3C 3G8 Canada +1 416-849-8900 x 100