A potentially dangerous Request.Form value was detected from the client

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Hello All of U..

I have problem with rich textbox...

on saving it is giving Error :A potentially dangerous Request.Form value was detected from the client

I handled it by :
1) ValidateRequest=false
2) In webConfig < httpRuntime requestValidationMode=2.0 >
3) < pages buffer="true" validateRequest=false .

But problem still persists.
if I add < httpRuntime requestValidationMode="2.0" > it gives MAC Viewstate problem. My website are running in 4.0 framework.

Please Help me .

Posted 20-Jun-12 22:04pm

shishir26

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3 solutions

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AshishChaudha · Answer 1 · 2012-06-20T22:21:00

Solution 1

Shishir,

have you tried this???

VB

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="default.aspx.cs"
    Inherits="_default" ValidateRequest="false"%>

Posted 20-Jun-12 22:21pm

AshishChaudha

**AmitGajjar** · Answer 2 · 2012-06-20T22:39:00

Solution 2

Hi,

check MSDN article[^] for more information about this issue.

hope this will help you,

thanks
-Amit

Posted 20-Jun-12 22:39pm

AmitGajjar

Vani Kulkarni · Answer 3 · 2012-06-20T23:02:00

Solution 3

See below link, it provides the reason for error occurence and also fix for that.

http://www.asp.net/whitepapers/request-validation[^]

For .Net 4.0:

ASP.NET 4.0 potentially dangerous Request.Form value was detected[^]

Posted 20-Jun-12 23:02pm

Vani Kulkarni

Updated 20-Jun-12 23:06pm

v2