The Request. Form value that is potentially dangerous is detected from the client. The client request. form

The Request. Form value that is potentially dangerous is detected from the client. The client request. form

You can add a feature in the Action for processing the Post method:

[ValidateInput (false)] to improve page security.

For example:

[HttpPost]
[ValidateInput (false)]
Public ActionResult ProcessData (MyModel model)
{
Return View ();
}

Important:
If you are using MVC 3.0 or later, you will find that the above settings are still invalid. This is because you also need to make the following settings in web. config:

<System. web>
<HttpRuntime requestValidationMode = "2.0" type = "codeph" text = "/codeph"/>
</System. web>