Countdown Timer c#
<p>Anybody knows how to add a <strong>Countdown Timer</strong> in c# </p>

<p><strong>Ex:</strong></p>

<p>I have the start time which is <strong>5/2/2011 10:00:00 Am</strong> and set the <em>static</em> Duration to <strong>7 Days</strong> </p>

<p>So .... the <strong>Time left</strong> will be <strong>6 Days 12:00 hour</strong> till it reach zero. ends in ->   <strong>5/9/2011 10:00:00 Am</strong></p>

<p><em><strong>Note :</em></strong> The Time Left can not be reset and start over again .. and it depends only 
on the Start Time</p>

<p>I don't know how to do this .. any help I will be grateful.</p>
