title: Edit Time from a DateTime variable in a DataGrid
body: <p>I have a datagrid with the following column</p>
  
  <pre><code>&lt;DataGridTextColumn Binding="{Binding MorningCheckOut, StringFormat=t"&gt;
  </code></pre>
  
  <p>With the way its setup it works well to display the data I need.
  f.e : 8:00 AM</p>
  
  <p>The problem comes when I'm editing it, since when I change the time, the DateTime variable updates the date to <code>DateTime.Now</code>.</p>
  
  <p>Any suggestions on how to deal with this problem? </p>