title: WPF DataGridTextColumn multi-line input
body: <p>I am using the WPF DataGrid control in .NET 4 that have a DataGridTextColumn.</p>
  
  <p>I want to be able to enter multi-line text.
  The line breaks are formatted correctly when I bind data to the column, but I've found no way of creating the line breaks when editing the text.</p>
  
  <pre><code>&lt;DataGrid ItemsSource="{Binding MyMessages}"&gt;
     &lt;DataGrid.Columns&gt;
        &lt;DataGridTextColumn Header="Message" Binding="{Binding Path=Message}"  Width="Auto"/&gt;
     &lt;DataGrid.Columns&gt;
  &lt;/DataGrid&gt;
  </code></pre>
  
  <p>Any suggestions?</p>