HomeController.cs

 public class HomeController : Controller
    {
        //
        // GET: /Home/
        public ILogger Logger { get; set; }
        private readonly IStoryTeller _teller;

        public HomeController(IStoryTeller teller)
        {
            _teller = teller;
        }
        
        public ActionResult Index()
        {
            string hoi = _teller.GoodMorning();
            Response.Write("Hello <p>");
            Response.Write(hoi);
            Response.Write("</p>");
            Logger.WarnFormat("Dit ging okee");

            return View();
        }