Web Forms :: Get The Error "A potentially Danger Request.Form Value Was Detected From The Client (txtCodeExtract=" Etc")
Sep 28, 2010
I am writing a database to store code extracts which will make our life easier at work, I have a text box which retrieves HTML characters, I have no problems in displaying them, however if I click the edit button to amend text I get the error "A potentially danger Request.Form value was detected from the client (txtCodeExtract=" etc").
I have added ValidateRequest="False" to the main form however, when I now click the edit button the textbox wipes out all the text.
I have tried using the Server.HTMLEncode(txtCodeExtracts.Text); or Decode and HttpUtility.HTMLEncode or Decode but the textbox still clears.
This is a web app using Visual Studio 2008
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Jun 2, 2010
I have one asp.net application, which has some problems while i am entering the special characters such as ": &#, " in the search box. If i enter this text in search box, i got the exception like this. A potentially dangerous Request.Form value was detected from the client (txtValue=": &#, ").
then i searched on the net, i got one general solution for this that to set the validaterequest to false. But no changes has been made on my application.
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Mar 7, 2011
I am Getting this error
A potentially dangerous Request.Form value was detected from the client (ctl00$ContentPlaceHolder1$txtEmbed="<embed src='http://a...").
when i am opening a modalpopup extender on link button click and in code behind i am assigning the textbox
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May 3, 2010
I know the < and > characters will cause this error, but what other characters/inputs will cause this error?
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Jun 23, 2010
On a windows 2008 web server, I get the following error whenever posting a form containing html tags in textboxes:
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Feb 24, 2010
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A potentially dangerous Request.Form value was detected in ASP.NET MVC
On this site:
http://www.coderjournal.com/2009/02/potentially-dangerous-requestform-detected-aspnet-mvc/
somebody writes that we should use [Code]....
[Code]....
[Code]....
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Nov 23, 2010
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Mar 26, 2010
[Update : I have inserted this post in "XML Web Services" section by mistake, so if you are a moderator or Admin, please shift it to "Security" section or any other relevant section]
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<system.web>
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May 24, 2010
I am using Webhandler to upload images to the server. I want to send the folder name so on that folder the images will save. I am using this URI format and got the below error.
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this.Uri
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Also I added the following line in the web.config but still having the issue.
<httpRuntime requestValidationMode="2.0" />
A potentially dangerous Request.Path value was detected from the client (?). Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.Web.HttpException: A potentially dangerous Request.Path value was detected from the client (?).
Source Error:
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
Stack
Trace:
[HttpException (0x80004005): A potentially dangerous Request.Path value was detected from the client (?).]
System.Web.HttpRequest.ValidateInputIfRequiredByConfig() +8884233
System.Web.ValidateRequestExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +35
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +184
Version
Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.1
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Oct 12, 2010
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Aug 16, 2010
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Sep 29, 2010
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When Iuse FTB in a normal web form I am having no issues. However when I create a master page then a web form that uses that master page I get the following error when pulling text from the FTB control
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Jun 25, 2010
I have an app that was originally running fine in ASP.Net 3.5, using the ValidateRequest set to false to allow HTML to be saved from a rich text box. However, after converting the app to 4.0, I am getting the Potentially Dangerous message, even though both the page and web.config have the value set to false.
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Mar 5, 2010
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Feb 10, 2011
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Quote:System.Web.HttpRequestValidationException: A potentially dangerous Request.Form value was detected from the client
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Jul 7, 2010
I'm testing a Tiny_MCE plugin for BlogEngine.NET extension I wrote earlier and I keep receiving the following error message whenever I use my own extension or the extremely popular SyntaxHighlighter extension which both have similar behaviors and both implement Tiny_MCE plugins:
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Jan 28, 2011
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Jul 27, 2010
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Why is a colon in the URL "potentially dangerous"? What dangerous things can be done with such a URL? Do I have any security hole here I am not aware of?
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Dec 23, 2015
I tried to use your code for ScrollBackposition in Chrome but gives an error in this statement. Identifier expected. Does scrollY needs to be defined as a HTML tag.
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Attempting to pack the contents of this rich text box into a Session variable raises the following Server Error:
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Session["NewProductDescription"] = HttpUtility.HtmlEncode(RichTextBox1.Text);
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Oct 15, 2010
I'm using a WCF with windows authentication.
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[Code]....
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When I try to set user credentials this way:
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When I try it this way:
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Mar 24, 2010
I am facing a problem related to register routes.
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