"Invalid Postback or callback argument" on modifying the DropDownList on the client side

Posted by gnomixa on Stack Overflow See other posts from Stack Overflow or by gnomixa
Published on 2010-04-16T17:11:37Z Indexed on 2010/04/16 17:13 UTC
Read the original article Hit count: 430

Filed under:

dropdownlist

|

asp.net-security

|

invalid-postback

I know why it's happening and i turned the validation on the page level, but is there a way to turn it off on the control level?

"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."

© Stack Overflow or respective owner

Related posts about dropdownlist

Difference between DropDownList.SelectedItem.Value And DropDownList.SelectedValue (ASP.NET)

as seen on Stack Overflow - Search for 'Stack Overflow'
Hey, I'm getting an error when SelctedIndexChanged, When the value change he gives me the previous selected value and not the new selected value. What's the problem here. And what's the difference between DropDownList.SelectedItem.Value DropDownList.SelectedValue >>> More
A multiple selection DropDownList (a CheckBoxList inside a DropDownList)

as seen on Code Project - Search for 'Code Project'
Check and mark more than one option in a DropDownList. >>> More
Using DropDownList in EditTemplates of a GridView

as seen on Stack Overflow - Search for 'Stack Overflow'
I am working on a GridView in Asp.Net. When initially a the Page Loads, my gridview look like: When a user clicks, to edit a row, I am using edit templates to show 'Domain' in a DropDownList. But problem is , when the DropDownlist gets load with data, it lost the current value of the 'Domain'. i… >>> More
toggle dropdownlist visibility

as seen on Stack Overflow - Search for 'Stack Overflow'
i have a dropdownlist in aspx (vb.net) that i have 2 dropdownlists. i want to show the second dropdownlist based on the value of first one. they are data wise interconnected, so if after selecting a certain record in first, if the second one has more than one record, the dropdownlist should be visible… >>> More
How to eliminate one of my extra DropDownLists in C#?

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm developing a C#/SQL web app in VS 2008 but for some reason I have one extra DropDownList. The very first dropdownlist displaying is empty. Can you help me identify the cause of this behavior? I'm baffled! An excerpt of my code is below. private DropDownList[] newcol; // Add DropDownList… >>> More

Related posts about asp.net-security

ASP.NET Security

as seen on Code Project - Search for 'Code Project'
ASP.NET Security >>> More
ASP.Net security using Operations Based Security

as seen on Stack Overflow - Search for 'Stack Overflow'
All the security stuff I have worked with in the past in ASP.Net for the most part has been role based. This is easy enough to implement and ASP.Net is geared for this type of security model. However, I am looking for something a little more fine grained than simple role based security. Essentially… >>> More
Asp.net Security: IIdentity.IsAuthenticated default implementation.

as seen on Stack Overflow - Search for 'Stack Overflow'
Hello Stackoverflowers, I am writing my own custom Identity class which implements IIdentity. I don't need to change the default method IsAuthenticated but so now I was wondering how does the default IIdentity determines if it should return true or false? I thought to find the answer in the FormsAuthenticationTicket… >>> More
Testing ASP.NET security in Firefox

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm not sure whether this question belongs on StackOverflow or SuperUser, but here goes nothing... I'm trying to test out some basic security problems on my personal ASP.NET website to see exactly how the custom validators, etc. work when tampering with the data. I've been looking at the Firefox… >>> More
What would you like to see in an beginner's ASP.NET security book

as seen on Stack Overflow - Search for 'Stack Overflow'
This is a shameless information gathering exercise for my own book. One of the talks I give in the community is an introduction to web site vulnerabilities. Usually during the talk I can see at least two members of the audience go very pale; and this is basic stuff, Cross Site Scripting, SQL Injection… >>> More