title: ItemsControl Height Issue
body: <p>I am trying to have the height of an itemscontrol be set to what is defined in the grid row definitions. If I set the Height on the itemscontrol manually, it of course affects the control. How can I bind to or achieve this behavior? I just want my itemscontrol size to be determined by the grid. Thanks!</p>
  
  <pre><code>&lt;ScrollViewer&gt;
  
          &lt;Grid&gt;
              &lt;Grid.RowDefinitions&gt;
                  &lt;RowDefinition Height="600"/&gt;
                  &lt;RowDefinition Height="500"/&gt;
              &lt;/Grid.RowDefinitions&gt;
  
              &lt;Grid.ColumnDefinitions&gt;
                  &lt;ColumnDefinition Width="*" /&gt;
              &lt;/Grid.ColumnDefinitions&gt;
  
              &lt;ItemsControl Grid.Row="1" Grid.Column="0" Name="MIPRegion" cal:RegionManager.RegionName="MIPRegion" /&gt;
  
          &lt;/Grid&gt;
      &lt;/ScrollViewer&gt;
  </code></pre>