title: DataGridTemplateColumn top margin / padding
body: <p>I have a StackPanel within my DataGridTemplateColumn. I can't seem to find a way to remove the  margin at the top in this cell.</p>
  
  <p>Here's the code I'm using:</p>
  
  <pre><code>        &lt;DataGridTemplateColumn IsReadOnly="True" Header="Description"&gt;
              &lt;DataGridTemplateColumn.CellTemplate&gt;
                  &lt;DataTemplate&gt;
                      &lt;StackPanel&gt;
                          &lt;StackPanel.Resources&gt;
                              &lt;Style TargetType="{x:Type Label}"&gt;
                                  &lt;Setter Property="FrameworkElement.Margin" Value="0,0,0,-10" /&gt;
                              &lt;/Style&gt;
                          &lt;/StackPanel.Resources&gt;
                          &lt;Label Content="{Binding Description1}" /&gt;
                          &lt;Label Content="{Binding Description2}" /&gt;
                      &lt;/StackPanel&gt;
                  &lt;/DataTemplate&gt;
              &lt;/DataGridTemplateColumn.CellTemplate&gt;
          &lt;/DataGridTemplateColumn&gt;
  </code></pre>
  
  <p>The margin appears to be from the DataGridTemplateColumn itself rather than the StackPanel since only the first Label has spacing above it.</p>