How to display loading time of a web page on the same page as label using C#

HttpWebRequest request = (HttpWebRequest)WebRequest.Create(address);
         System.Diagnostics.Stopwatch timer = new Stopwatch();
         timer.Start();
         HttpWebResponse response = (HttpWebResponse)request.GetResponse();
         timer.Stop();
         TimeSpan timeTaken = timer.Elapsed;
         Label1.Text = timeTaken.ToString();