title: How to DataBind WPF Slider's Thumb's DragCompleted event
body: <p>I want to bind the DragCompleted event to one of my ViewModel's Command. I tried the following using Blend but it doesn't work:</p>
  
  <pre><code>&lt;Slider x:Name="slider" HorizontalAlignment="Left" Margin="41,147,0,0" VerticalAlignment="Top" Width="412"&gt;
      &lt;i:Interaction.Triggers&gt;
          &lt;i:EventTrigger EventName="Thumb.DragCompleted"&gt;
              &lt;i:InvokeCommandAction Command="{Binding DragCompletedCommand}"&gt;&lt;/i:InvokeCommandAction&gt;
          &lt;/i:EventTrigger&gt;
      &lt;/i:Interaction.Triggers&gt;
  &lt;/Slider&gt;
  </code></pre>
  
  <p>But this doesn't work. When I use the normal binding of event to code behind, it works:</p>
  
  <pre><code>&lt;Slider x:Name="slider" Thumb.DragCompleted="slider_DragCompleted"  HorizontalAlignment="Left" Margin="41,147,0,0" VerticalAlignment="Top" Width="412"&gt;&lt;/Slider&gt;
  </code></pre>
  
  <p>I tried searching but strangely couldn't find answer to this.</p>