<Window x:Class="WpfApplication1.MainWindow" 
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
        xmlns:local="clr-namespace:WpfApplication1" 
        Title="MainWindow" Height="480" Width="640"> 
    <Window.Resources> 
        <local:MyDataSource x:Key="MyData"/> 
        <CollectionViewSource x:Key="ViewSource" Source="{Binding Source={StaticResource MyData}, Path=Users}"> 
            <CollectionViewSource.GroupDescriptions> 
                <PropertyGroupDescription PropertyName="Country"/> 
                 
            </CollectionViewSource.GroupDescriptions> 
        </CollectionViewSource> 
    </Window.Resources> 
     
    <Grid x:Name="LayoutRoot"> 
        <ListView ItemsSource="{Binding Source={StaticResource ViewSource}}"> 
            <ListView.GroupStyle> 
                <GroupStyle> 
                    <GroupStyle.ContainerStyle> 
                        <Style TargetType="{x:Type GroupItem}"> 
                            <Setter Property="Template"> 
                                <Setter.Value> 
                                    <ControlTemplate TargetType="{x:Type GroupItem}"> 
                                        <DockPanel> 
                                            <Grid DockPanel.Dock="Bottom"> 
                                                <Grid.Resources> 
                                                    <local:TotalSumConverter x:Key="sumConverter"/> 
                                                </Grid.Resources> 
                                                <Grid.ColumnDefinitions> 
                                                    <ColumnDefinition Width="*"/> 
                                                    <ColumnDefinition Width="*"/> 
                                                </Grid.ColumnDefinitions> 
                                                <Grid.RowDefinitions> 
                                                    <RowDefinition/> 
                                                    <RowDefinition/> 
                                                </Grid.RowDefinitions> 
                                                <StackPanel Orientation="Horizontal"> 
                                                    <TextBlock Grid.Column="0" Text="Total: " FontWeight="Bold"/> 
                                                    <TextBlock Grid.Column="0" Text="{Binding Path=Name}"/> 
                                                </StackPanel> 
                                                <Line Grid.Column="1" Stroke="Black" X2="500" Fill="Black" VerticalAlignment="Center"/> 
                                                <TextBlock Grid.Row="1" Grid.Column="1" HorizontalAlignment="Right" Text="{Binding Path=Items, Converter={StaticResource sumConverter}}"/> 
                                            </Grid> 
                                            <ItemsPresenter/> 
                                        </DockPanel> 
                                    </ControlTemplate> 
                                </Setter.Value> 
                            </Setter> 
                        </Style> 
                    </GroupStyle.ContainerStyle> 
                </GroupStyle> 
            </ListView.GroupStyle> 
            <ListView.View> 
                <GridView> 
                    <GridViewColumn Width="140" Header="Name" DisplayMemberBinding="{Binding Name}"/> 
                    <GridViewColumn Width="140" Header="Phone Number" DisplayMemberBinding="{Binding Phone}"/> 
                    <GridViewColumn Width="140" Header="Country" DisplayMemberBinding="{Binding Country}"/> 
                    <GridViewColumn Width="140" Header="City" DisplayMemberBinding="{Binding City}"/> 
                    <GridViewColumn Width="140" Header="Total" DisplayMemberBinding="{Binding Total}"/> 
                </GridView> 
            </ListView.View> 
        </ListView> 
         
    </Grid> 
</Window>