title: WPF DataGridTextColumn and Tag
body: <p>I have a datagrid with several DataGridTextColumn defined.</p>
  
  <p>I need to use the Textblock's Tag property. I can't find it on a DataGridTextColumn.</p>
  
  <p>I found a workaround which works, i.e a DataTemplateColumn in which I declare the textblock, in which case I have access to the Tag property:</p>
  
  <pre><code>&lt;DataGridTemplateColumn Header="Column with Tag accessible"&gt;
      &lt;DataGridTemplateColumn.CellTemplate&gt;
          &lt;DataTemplate&gt;
              &lt;TextBlock Tag="{Binding Variable1Name}"
                         Text="{Binding Variable2Name}" /&gt;
          &lt;/DataTemplate&gt;
      &lt;/DataGridTemplateColumn.CellTemplate&gt;
  &lt;/DataGridTemplateColumn&gt;
  </code></pre>
  
  <p>It would be great however if I could achieve the same result with the DataGridTextColumn. Any idea please?</p>