Return View from ActionFilter

Question

I have an ActionFilter that checks if a parameter in the URL is valid. If it is not valid I have to render a View. I dont want to redirect, because I still need the ActionEx

Answer 1

HandleErrorAttribute had what I was looking for.

filterContext.Result = new ViewResult
            {
                ViewName = "MessagePage",
                ViewData = filterContext.Controller.ViewData,
                TempData = filterContext.Controller.TempData
            };