title: Make Media player time line using Slider
body: <p>I'm using a <code>Slider</code> for showing media time line.while media is playing i update sidebar value with this lines of code:</p>
  
  <pre><code> void SoundTime_Tick(object sender, EventArgs e)
    {
      SliderBar.Value = GetCurrentTimePosation();
    }
  </code></pre>
  
  <p>but with this  <code>SliderBar.ValueChanged</code> event every time called and i cant change time line position with mouse:(when i change it it return to <code>GetCurrentTimePosation()</code> time)</p>
  
  <pre><code>  void SeekToMediaPosition(object sender, RoutedPropertyChangedEventArgs&lt;double&gt; e)
      {
             media.setpos((uint)e.NewValue);
      }
  </code></pre>
  
  <p>Any idea?</p>