title: WPF Datagrid checkbox column checked
body: <p>My datagrid checkbox column:</p>
  
  <pre><code>                    &lt;DataGridTemplateColumn MaxWidth="45"&gt;
                      &lt;DataGridTemplateColumn.CellTemplate&gt;
                          &lt;DataTemplate&gt;
                              &lt;CheckBox x:Name="check_tutar"  VerticalAlignment="Center" HorizontalAlignment="Center" HorizontalContentAlignment="Center" Checked="check_tutar_Checked"&gt;&lt;/CheckBox&gt;
                          &lt;/DataTemplate&gt;
                      &lt;/DataGridTemplateColumn.CellTemplate&gt;
                  &lt;/DataGridTemplateColumn&gt;
  </code></pre>
  
  <p>I want to access this checkbox and change checked property. I try defalut method: <code>check_tutar.IsChecked = false;</code></p>
  
  <p>But didnt work because I can not access the checkbox using name. How can I change datagrid column checkbox checked property?</p>