1 public ActionResult Index()
 2 {
 3     ViewBag.Message = "Welcome to ASP.NET MVC!";
 4     Trace.Write("Hey, this is nice");
 5     Trace.TraceWarning("Oh, this could be bad.");
 6     return View();
 7 } 
 8 
 9 public ActionResult About()
10 {
11     Trace.TraceError("Oh, no! That's bad");
12     return View();
13 }