title: How to add a vertical Separator?
body: <p>I want to add a vertical Separator to a Grid, but i can only find the horizontal.
  Isn't there a Property, where you can enter if the line of the separator should be horizontal or vertical?</p>
  
  <p>I searched a lot, but didn't find a short and easy solution to this.</p>
  
  <p>I use .Net Framework 4.0 and Visual Studio Ultimate 2012.</p>
  
  <p>If I try to rotate the horizontal Separator by 90 degrees, it loses the ability to "dock" to other Components.</p>
  
  <p>The rotated separator looks like this:</p>
  
  <pre><code>&lt;Separator HorizontalAlignment="Left" Height="100" Margin="264,26,0,0" VerticalAlignment="Top" Width="100" RenderTransformOrigin="0.5,0.5"&gt;
      &lt;Separator.RenderTransform&gt;
          &lt;TransformGroup&gt;
              &lt;ScaleTransform/&gt;
              &lt;SkewTransform/&gt;
              &lt;RotateTransform Angle="90"/&gt;
              &lt;TranslateTransform/&gt;
          &lt;/TransformGroup&gt;
      &lt;/Separator.RenderTransform&gt;
  &lt;/Separator&gt;
  </code></pre>