Logging MVC application with " ActionFilter", ( OnActionExecuting, OnActionExecuted etc.)

using System;

using System.Collections.Generic;

using System.Diagnostics;

using System.Linq;

using System.Web;

using System.Web.Mvc;

using System.Web.Routing;

namespace WebApplication1.Controllers

{

    [Log]

    public class HomeController : Controller

    { 

        public ActionResult Index()

        {     

            return View();

        }

        public ActionResult About()

        {

            ViewBag.Message = "Your application description page.";

            return View();

        }

        public ActionResult Contact()

        {

            ViewBag.Message = "Your contact page.";

            return View();

        }

    }

    public class LogAttribute : ActionFilterAttribute

    {

        public override void OnActionExecuted(ActionExecutedContext filterContext)

        {

            Log("OnActionExecuted", filterContext.RouteData);

        }

        public override void OnActionExecuting(ActionExecutingContext filterContext)

        {

            Log("OnActionExecuting", filterContext.RouteData);

        }

        public override void OnResultExecuted(ResultExecutedContext filterContext)

        {

            Log("OnResultExecuted", filterContext.RouteData);

        }

        public override void OnResultExecuting(ResultExecutingContext filterContext)

        {

            Log("OnResultExecuting ", filterContext.RouteData);

        }

        private void Log(string methodName, RouteData routeData)

        {

            var controllerName = routeData.Values["controller"];

            var actionName = routeData.Values["action"];

            var message = String.Format("{0}- controller:{1} action:{2}", methodName,

                                                                        controllerName,

                                                                        actionName);

 

            var sc = message;

        }

    }

}