ASP.NET MVC 4 - ActionExecutedContext&ActionExecutingContext&ActionFilterAttribute

 public class MyActionFilterAttribute :ActionFilterAttribute
    {
            public override void OnActionExecuted(ActionExecutedContext filterContext)
            {
                filterContext.HttpContext.Response.Write("OnActionExecuted is Executed!<br/>");
            }
            public override void OnActionExecuting(ActionExecutingContext filterContext)
            {
                filterContext.HttpContext.Response.Write("OnActionExecuting is Executed!<br/>");
            }
            public override void OnResultExecuted(ResultExecutedContext filterContext)
            {
                filterContext.HttpContext.Response.Write("OnResultExecuted is Executed!<br/> ");
            }
            public override void OnResultExecuting(ResultExecutingContext filterContext)
            {
                filterContext.HttpContext.Response.Write("OnResultExecuted is Executed!<br/> ");
            }
    }
    public class HomeController : Controller
    {
        //
        // GET: /Home/

       [MyActionFilterAttribute(Order = 3)]
        public string Index()
       {
           return "I returned an string is Hello Nikain<br/>";
       }
     
    }

as you can see 

so it is all about the ActionFilterAttribute . once have this you can do everything you want .