title: DispatcherTimer with interval 0,0,1 is not exactly 1 second?
body: <p>(Using WPF)</p>
  
  <p>In a small application that I wrote, I am using some count-down timers.
  For this I have used the <code>DispatcherTimer</code>.</p>
  
  <pre><code>counter01 = new DispatcherTimer();
  counter01.Tick += new EventHandler(counter01_Tick);
  counter01.Interval = new TimeSpan(0, 0, 1);
  </code></pre>
  
  <p>But now when I test/use the program, I have noticed that when it's set to (for example) 60 minutes count-down, it gets a few minutes off compared to the real world time.</p>
  
  <p>Could it be that for some reason <code>DispatcherTimer</code> is not always exactly 1 second if I use it like I did above?</p>