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129713 Mar 29,2017 09:08 PM UTC Mar 30,2017 05:43 AM UTC ASP.NET Web Forms 1
Tags: RichTextEditor
Asked On March 29, 2017 09:08 PM UTC


I added a RichTextEdit in my site. In particolar i added in a 


But when i send a post back the site go in error, with this errore:

Valore potenzialmente pericoloso Request.Form rilevato dal client (MainContent_UCImmobile_Accordion1_txtSito_formatDDL="<p>").

Descrizione: ASP.NET ha rilevato nella richiesta dati potenzialmente pericolosi perché potrebbero includere script o markup HTML. I dati potrebbero rappresentare un tentativo di compromettere la sicurezza dell'applicazione, ad esempio un attacco di tipo cross-site scripting (XSS). Se il tipo di input è appropriato per l'applicazione, è possibile includere in una pagina Web il codice per autorizzarlo in modo esplicito. Per ulteriori informazioni, visitare il sito Web all'indirizzo http://go.microsoft.com/fwlink/?LinkID=212874. 

Dettagli eccezione: System.Web.HttpRequestValidationException: Valore potenzialmente pericoloso Request.Form rilevato dal client (MainContent_UCImmobile_Accordion1_txtSito_formatDDL="<p>").

I try to insert this control out of accordion but the problem didn't resolve.

Some one can help me?



Karthikeyan Viswanathan [Syncfusion]
Replied On March 30, 2017 05:43 AM UTC

Hi Emanuele,

Thanks for contacting Syncfusion support.
If you receive an error as “A potentially dangerous Request.Form value was detected from the client (MainContent_UCImmobile_Accordion1_txtSito_formatDDL="<p>").”, we suggest you to include the below lines in your web.config file as a workaround
httpRuntime  requestValidationMode="2.0" />
pages validateRequest="false">
This error occurs because ASP.NET 4 validates every request that it is receives. Older versions of ASP.NET only validate the requests to ASPX pages. 
If this is not your error, then we request you to share us an error’s detailed description. And also, we request you to share us a screenshot or your code snippets of an error so that we would isolate the issue and help you out better.
Karthikeyan V. 


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