Invalid postback or callback argument

Question

0.00/5 (No votes)

See more:

On form submission I'm getting the following error in Visual Studio 2008 (asp.net 1.1 to 2.0).

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.

What does this mean, and how can I fix it?

Posted 19-Dec-09 21:40pm

Member 2146790

Updated 19-Dec-09 22:33pm

0x3c0

v2

Add a Solution

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
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.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

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

Christian Graus · Answer 1 · 2009-12-19T23:33:00

Solution 1

It means what it says. You fix it by turning off event validation, it's basically a security feature that more often than not turns into a bug.

You can also use RegisterForEventValidation, like it says.

Posted 19-Dec-09 23:33pm

Christian Graus