How to Select All CheckBox of a Column on DataGrid Header CheckBox in WPF DataGrid

Im facing an issue with  Wpf DataGrid Checkboxes C#.

Im not finding a way to select all cell template checkboxes when the header template checkbox is selected. in viewmodel its working fine. it get select all but in view it no showing any selected checkbox sign/mark on checked header checkbox.

click this link I want to do same like this My XAML code :

 <DataGrid x:Name="DgLines" ItemsSource="{Binding OpcUaEndpoints}" MouseDoubleClick="DgLines_MouseDoubleClick" SelectionMode="Extended"  

                          DataContext="{Binding}"  IsReadOnly="True" Grid.ColumnSpan="5">
                    <DataGrid.Columns>
<DataGridTemplateColumn <DataGridTemplateColumn.HeaderTemplate>
                                <DataTemplate>
                                    <CheckBox Name="ckbSelectedAll"  Checked="ckbSelectedAll_Checked" Unchecked="ckbSelectedAll_Unchecked" IsChecked="{Binding IsSelected, UpdateSourceTrigger=PropertyChanged}"></CheckBox>
                                </DataTemplate>
                            </DataGridTemplateColumn.HeaderTemplate>
                            <DataGridTemplateColumn.CellTemplate>
                                <DataTemplate>
                                    <CheckBox Name="cbkSelect" Checked="cbkSelect_Checked" Unchecked="cbkSelect_Unchecked"   IsChecked="{Binding IsSelected, UpdateSourceTrigger=PropertyChanged}" />
                                </DataTemplate>
                            </DataGridTemplateColumn.CellTemplate>
                        </DataGridTemplateColumn>

                        <!--<DataGridTextColumn Width="200" Header="Id" Binding="{Binding Id }" />-->

                        <DataGridTextColumn Width="200" Header="Name" Binding="{Binding Name}"   />
                        <DataGridTextColumn Width="500" Header="Description" Binding="{Binding Description}"   />
                        <DataGridTextColumn Width="500" Header="Lines" Binding="{Binding Endpoint}"   />
                    </DataGrid.Columns>
                </DataGrid>


//ViewModelCode

  private void ckbSelectedAll_Unchecked(object sender, RoutedEventArgs e)
        {
            //  this.DgLines.UnselectAll();
            foreach (AddLinesViewModel c in DgLines.ItemsSource)
            {
                c.IsSelected = false;
            }
        }