title: WPF DataGrid Sync Column Widths
body: <p>I've got two WPF Toolkit <code>DataGrids</code>, I'd like so that when the user resizes the first column in the first grid, it resizes the first column in the second grid. I've tried binding the width of the <code>DataGridColumn</code> in the second grid to the appropriate column in the first grid, but it doesn't work. I'd prefer to use all xaml, but I'm fine with using code behind as well.</p>
  
  <pre><code>&lt;tk:DataGrid Width="100" Height="100"&gt;
      &lt;tk:DataGrid.Columns&gt;
          &lt;tk:DataGridTextColumn x:Name="Column1" Width="50"/&gt;
      &lt;/tk:DataGrid.Columns&gt;
  &lt;/tk:DataGrid&gt;
  &lt;tk:DataGrid Width="100" Height="100"&gt;
      &lt;tk:DataGrid.Columns&gt;
          &lt;tk:DataGridTextColumn x:Name="Column1Copy" Width="{Binding Path=ActualWidth, ElementName=Column1}"/&gt;
      &lt;/tk:DataGrid.Columns&gt;
  &lt;/tk:DataGrid&gt;
  </code></pre>
  
  <p>I also tried binding to <code>Width</code> instead of <code>ActualWidth</code>, but neither works.</p>
  
  <p>Any help is greatly appreciated.</p>