title: why is that we always get an extra column show in datagrid
body: <p>i have four columns specfied but why is that i always  see one  extra  column  shown in the output</p>
  
  <p>this is my xaml code</p>
  
  <pre><code> &lt;Grid x:Name="LayoutRoot" Background="White" Height="492" Width="453"&gt;
          &lt;sdk:DataGrid MinHeight="100" x:Name="dgCounty" AutoGenerateColumns="False" VerticalAlignment="Top" Grid.Row="1"   IsReadOnly="True"  Margin="5,5,5,0" RowDetailsVisibilityChanged="dgCounty_RowDetailsVisibilityChanged"  SelectionMode="Extended"   RowDetailsVisibilityMode="VisibleWhenSelected"&gt;
              &lt;sdk:DataGrid.Columns&gt;
                  &lt;sdk:DataGridTemplateColumn&gt;
                      &lt;sdk:DataGridTemplateColumn.CellTemplate&gt;
                          &lt;DataTemplate&gt;
                              &lt;Button x:Name="myButton" Width="24" Height="24" Click="Details_Click"&gt;
                                  &lt;Image  x:Name="img" Source="Images/detail.JPG" Stretch="None"/&gt;
                              &lt;/Button&gt;
                          &lt;/DataTemplate&gt;
                      &lt;/sdk:DataGridTemplateColumn.CellTemplate&gt;
                  &lt;/sdk:DataGridTemplateColumn&gt;
                  &lt;sdk:DataGridTemplateColumn  Header="ID"&gt;
                      &lt;sdk:DataGridTemplateColumn.CellTemplate&gt;
                          &lt;DataTemplate &gt;
                                  &lt;sdk:Label Content="{Binding EmployeeID}" /&gt;
                          &lt;/DataTemplate&gt;
                      &lt;/sdk:DataGridTemplateColumn.CellTemplate&gt;
                  &lt;/sdk:DataGridTemplateColumn&gt;
                  &lt;sdk:DataGridTemplateColumn  Header="Name"&gt;
                      &lt;sdk:DataGridTemplateColumn.CellTemplate&gt;
                          &lt;DataTemplate &gt;
                              &lt;sdk:Label Content="{Binding EmployeeFName}" /&gt;
                          &lt;/DataTemplate&gt;
                      &lt;/sdk:DataGridTemplateColumn.CellTemplate&gt;
                  &lt;/sdk:DataGridTemplateColumn&gt;
                  &lt;sdk:DataGridTemplateColumn  Header="MailID"&gt;
                      &lt;sdk:DataGridTemplateColumn.CellTemplate&gt;
                          &lt;DataTemplate &gt;
                              &lt;sdk:Label Content="{Binding EmployeeMailID}" /&gt;
                          &lt;/DataTemplate&gt;
                      &lt;/sdk:DataGridTemplateColumn.CellTemplate&gt;
                  &lt;/sdk:DataGridTemplateColumn&gt;
              &lt;/sdk:DataGrid.Columns&gt;
  
   &lt;/sdk:DataGrid&gt;
  </code></pre>
  
  <p><strong>is there any setting that we need  to  do  to remove that extra  column?</strong></p>
  
  <p>thanks in advance  for the  help. </p>