Timing your MVC Actions

Add the following attribute to your MVC actions to view the timing of your mvc actions using System.Diagnostics.Stopwatch class.

This is another filter attribute example.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using System.Diagnostics;

namespace TestActionMethodSelectorAttribute.Attributes
{
    public class StopwatchAttribute : ActionFilterAttribute
    {
        private Stopwatch _stopWatch;

        public StopwatchAttribute()
        {
            _stopWatch = new Stopwatch(); 
        }

        public override void OnActionExecuting(ActionExecutingContext filterContext)
        {
            _stopWatch.Start(); 
        }

        public override void OnActionExecuted(ActionExecutedContext filterContext)
        {
            _stopWatch.Stop();
            var response = filterContext.HttpContext.Response;
            response.AddHeader("X-elapsed-milliseconds", _stopWatch.ElapsedMilliseconds.ToString()); 
        }
    }
}

Usage (homecontroller):

        [Stopwatch] 
        public ActionResult About()
        {
            return View();
        }

It is nice to output the elapsed time in millisecond in the http headers, since we then easily can monitor the values outside Visual Studio, in our browser: