title: Hierarchial Datagrids in WPF
body: <p>I have a hierarchical Data grid.</p>
  
  <pre><code>&lt;DataGrid Name="dgList" ItemsSource="{Binding List1}" Grid.Row="0" Margin="0,0,0,0"
                        CanUserAddRows="False" AutoGenerateColumns="False" IsReadOnly="True" &gt;
              &lt;DataGrid.Columns&gt;
                  &lt;DataGridTextColumn Header="Sub System" Binding="{Binding Path=Name}" IsReadOnly="True"&gt;&lt;/DataGridTextColumn&gt;
              &lt;/DataGrid.Columns&gt;
              &lt;DataGrid.RowDetailsTemplate&gt;
                  &lt;DataTemplate&gt;
                      &lt;DataGrid Name="dgList2" AutoGenerateColumns="False" ItemsSource="{Binding Name1}" CanUserAddRows="False" IsReadOnly="True" &gt;
                          &lt;DataGrid.Columns&gt;
                              &lt;DataGridTextColumn MinWidth="250" Header="Name3" Binding="{Binding Path=Name3}"&gt;&lt;/DataGridTextColumn&gt;
                          &lt;/DataGrid.Columns&gt;
                          &lt;DataGrid.RowDetailsTemplate&gt;
                              &lt;DataTemplate&gt;
                                  &lt;DataGrid Name="List2" AutoGenerateColumns="False" ItemsSource="{Binding List3}" CanUserAddRows="False" IsReadOnly="True" &gt;
                                      &lt;DataGrid.Columns&gt;
                                          &lt;DataGridTextColumn MinWidth="250" Header="FN" Binding="{Binding Path=FirstName}"&gt;&lt;/DataGridTextColumn&gt;
                                          &lt;DataGridTextColumn MinWidth="250" Header="LN" Binding="{Binding Path=LastName}"&gt;&lt;/DataGridTextColumn&gt;
                                      &lt;/DataGrid.Columns&gt;
                                  &lt;/DataGrid&gt;
                              &lt;/DataTemplate&gt;
                          &lt;/DataGrid.RowDetailsTemplate&gt;
                      &lt;/DataGrid&gt;
                  &lt;/DataTemplate&gt;
              &lt;/DataGrid.RowDetailsTemplate&gt;
          &lt;/DataGrid&gt; 
  </code></pre>
  
  <p>The grid works fine,Clicking on the row would expand the sublist. But is it possible to have an arrow or + plus on the left column which would indicate that there are more rows. </p>