MVC"检测到有潜在危险的 Request.Form值"

var text = Request.Unvalidated().Form["htmlEditer"]; 

   FormCollection collection = new FormCollection(Request.Unvalidated().Form);

[ValidateInput(false)]
        public ActionResult test()
        {
            this.ValidateRequest = false;

            ViewData["Title"] = "test Page";

            ViewData["FckTextBox"] = Request.Form["FckTextBox"];

            return View();
        }