How to write an action filter for all controllers

Question

Here is an example of an action filter. We know that when we write an action filter, we need to decorate a controller with such an attribute to use it for any controller.

I would like to know if there is any way to write an action filter that will work for all controllers in such a way that I do not need to decorate all controllers with an action filter attribute. Any ideas?

[LogActionFilter]
public class HomeController : Controller
{}

public class LogActionFilter : ActionFilterAttribute

     {
          public override void OnActionExecuting(ActionExecutingContext filterContext)
          {
               Log("OnActionExecuting", filterContext.RouteData);       
          }

          public override void OnActionExecuted(ActionExecutedContext filterContext)
          {
               Log("OnActionExecuted", 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);
               Debug.WriteLine(message, "Action Filter Log");
          }

     }

Answer 1

public class LogActionFilterAttribute : IActionFilter
    {
        public void OnActionExecuted(ActionExecutedContext filterContext)
        {
            Log("OnActionExecuted", filterContext.RouteData);    
        }

        public void OnActionExecuting(ActionExecutingContext filterContext)
        {
            Log("OnActionExecuting", 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);
            Debug.WriteLine(message, "Action Filter Log");
        }
    }

public class MvcApplication : System.Web.HttpApplication
    {
        protected void Application_Start()
        {
            GlobalFilters.Filters.Add(new LogActionFilterAttribute());
        }
    }

Answer 2

Custom BaseController [LogActionFilter] Custom Basecontroller Custom Basecontroller, :

[LogActionFilter]
public class MyBaseController : Controller
{

}

public class MyOtherController : MyBaseController //<----instead of using Controller as base use MyBaseController as base class
{
    public ActionResult Index()
    {
        // ...
    }
}

, [LogActionFilter] , BaseController.

Answer 3

, - . , ,

public class BaseController : Controller {
   protected override void OnActionExecuting(ActionExecutingContext filterContext) {
      ViewBag.SomeValue = "glorp frob blizz nunk";
      // Access the controller, parameters, querystring, etc. from the filterContext
      base.OnActionExecuting(filterContext);
   }
}

, , :

public sealed class GlorpController : BaseController {
   public ActionResult Index() => View();
}

ViewBag.SomeValue.