title: How to click content behind collapsed WPF expander?
body: <p>When I collapse an expander, it visibly collapse, but I cannot click the content behind. </p>
  
  <p>It occupies the same space as if it were expanded... </p>
  
  <p>Is it possible to REALLY collapse an expander? Thanks in advance.</p>
  
  <p>EDIT:</p>
  
  <p>Code example:</p>
  
  <pre><code> &lt;Grid&gt;
      &lt;Button Content="CannotClick" Height="23" HorizontalAlignment="Left" Margin="314,91,0,0" Name="button1" VerticalAlignment="Top" Width="75" /&gt;
      &lt;Expander Header="expander1" Height="190" HorizontalAlignment="Left" Margin="306,32,0,0" Name="expander1" VerticalAlignment="Top" Width="95"&gt;
          &lt;Grid&gt;
              &lt;Button Content="Button" Height="23" HorizontalAlignment="Left" Margin="7,106,0,0" Name="button2" VerticalAlignment="Top" Width="75" /&gt;
          &lt;/Grid&gt;
      &lt;/Expander&gt;
  &lt;/Grid&gt;
  </code></pre>
  
  <p>The CannotClick Button is below the expanded area of the expander.</p>