AJAX Request vc RedirectToRouteResult

            if (filterContext.HttpContext.Request.Headers["X-Requested-With"] == "XMLHttpRequest")
            {
                //Return JSON
                filterContext.Result = new JsonResult
                {
                    JsonRequestBehavior = JsonRequestBehavior.AllowGet,
                    Data = new { error = true, message = "Sorry, an error occurred while processing your request." }
                };
            }
            else
            {
                //Redirect user to error page
                filterContext.Result = new RedirectToRouteResult(new System.Web.Routing.RouteValueDictionary(
                new { Controller = "Error", Action = "Index" }));
            }