Layers Pattern in Practice

<ResourceDictionary
	xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
	xmlns:WpfToolkit="http://schemas.microsoft.com/wpf/2008/toolkit"
    xmlns:Primitives="clr-namespace:Microsoft.Windows.Controls.Primitives;assembly=WPFToolkit">

    <ResourceDictionary.MergedDictionaries>
        <ResourceDictionary Source="Brushes.xaml"/>
    </ResourceDictionary.MergedDictionaries>

    <!-- DataGrid Style -->
    <!-- Created Ciumac Sergiu 19.01.2009 -->
    <!-- Downloaded From: http://sweux.com/blogs/smoura/index.php/wpf/2009/04/27/wpf-toolkit-datagrid-part-ii-custom-styling/ -->
    
    <Style x:Key="DataGrid" TargetType="{x:Type WpfToolkit:DataGrid}">
        <Setter Property="Background" Value="{StaticResource DefaultControlBackgroundBrush}"/>
        <Setter Property="Foreground" Value="{StaticResource DefaultControlForegroundBrush}"/>
        <Setter Property="BorderBrush" Value="{StaticResource DefaultControlBorderBrush}" />
        <Setter Property="HorizontalGridLinesBrush" Value="{StaticResource GridLineColorBrush}" />
        <Setter Property="VerticalGridLinesBrush" Value="{StaticResource GridLineColorBrush}" />
        <Setter Property="AlternatingRowBackground" Value="{StaticResource AlternateRowBackgroundBrush}" />
        <Setter Property="BorderThickness" Value="1" />
        <!-- This is needed to force DG to have a non-default value.  Otherwise the DGR.DetailsVisibility cannot have a value of VisibleWhenSelected by default. -->
        <Setter Property="RowDetailsVisibilityMode" Value="VisibleWhenSelected" />
        <Setter Property="ScrollViewer.CanContentScroll" Value="true"/>
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type WpfToolkit:DataGrid}">
                    <Border
						Background="{TemplateBinding Background}"
						BorderBrush="{TemplateBinding BorderBrush}"
						BorderThickness="{TemplateBinding BorderThickness}"
						SnapsToDevicePixels="True"
						Padding="{TemplateBinding Padding}">
                        <ScrollViewer Focusable="false" Name="DG_ScrollViewer">
                            <ScrollViewer.Template>
                                <ControlTemplate TargetType="{x:Type ScrollViewer}">
                                    <Grid>
                                        <Grid.RowDefinitions>
                                            <RowDefinition Height="Auto"/>
                                            <RowDefinition Height="*"/>
                                            <RowDefinition Height="Auto"/>
                                        </Grid.RowDefinitions>

                                        <Grid.ColumnDefinitions>
                                            <ColumnDefinition Width="Auto"/>
                                            <ColumnDefinition Width="*"/>
                                            <ColumnDefinition Width="Auto"/>
                                        </Grid.ColumnDefinitions>

                                        <!--Left Column Header Corner -->
                                        <Button 
											Command="{x:Static WpfToolkit:DataGrid.SelectAllCommand}"
											Width="{Binding RelativeSource={RelativeSource AncestorType={x:Type WpfToolkit:DataGrid}}, Path=CellsPanelHorizontalOffset}"
											Focusable="false"
											Visibility="{Binding RelativeSource={RelativeSource AncestorType={x:Type WpfToolkit:DataGrid}}, Path=HeadersVisibility, Converter={x:Static WpfToolkit:DataGrid.HeadersVisibilityConverter}, ConverterParameter={x:Static WpfToolkit:DataGridHeadersVisibility.All}}" />
                                        <!--Column Headers-->
                                        <Primitives:DataGridColumnHeadersPresenter 
											Grid.Column="1" 
											Name="PART_ColumnHeadersPresenter"
											Visibility="{Binding RelativeSource={RelativeSource AncestorType={x:Type WpfToolkit:DataGrid}}, Path=HeadersVisibility, Converter={x:Static WpfToolkit:DataGrid.HeadersVisibilityConverter}, ConverterParameter={x:Static WpfToolkit:DataGridHeadersVisibility.Column}}"/>

                                        <!--DataGrid content-->
                                        <ScrollContentPresenter x:Name="PART_ScrollContentPresenter" Grid.Row="1" Grid.ColumnSpan="2" CanContentScroll="{TemplateBinding CanContentScroll}" />

                                        <ScrollBar
											Grid.Row="0" Grid.RowSpan="2" Grid.Column="2" Name="PART_VerticalScrollBar"
											Orientation="Vertical"
											Maximum="{TemplateBinding ScrollableHeight}"
											ViewportSize="{TemplateBinding ViewportHeight}"
											Value="{Binding Path=VerticalOffset, RelativeSource={RelativeSource TemplatedParent}, Mode=OneWay}"
											Visibility="{TemplateBinding ComputedVerticalScrollBarVisibility}"/>

                                        <Grid Grid.Row="2" Grid.Column="1">
                                            <Grid.ColumnDefinitions>
                                                <ColumnDefinition Width="{Binding RelativeSource={RelativeSource AncestorType={x:Type WpfToolkit:DataGrid}}, Path=NonFrozenColumnsViewportHorizontalOffset}"/>
                                                <ColumnDefinition Width="*"/>
                                            </Grid.ColumnDefinitions>
                                            <ScrollBar 
												Grid.Column="1"
												Name="PART_HorizontalScrollBar"
												Orientation="Horizontal"
												Maximum="{TemplateBinding ScrollableWidth}"
												ViewportSize="{TemplateBinding ViewportWidth}"
												Value="{Binding Path=HorizontalOffset, RelativeSource={RelativeSource TemplatedParent}, Mode=OneWay}"
												Visibility="{TemplateBinding ComputedHorizontalScrollBarVisibility}"/>
                                        </Grid>
                                    </Grid>
                                </ControlTemplate>
                            </ScrollViewer.Template>
                            <ItemsPresenter SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
                        </ScrollViewer>
                    </Border>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
        <Style.Triggers>
            <Trigger Property="IsGrouping" Value="true">
                <Setter Property="ScrollViewer.CanContentScroll" Value="false"/>
            </Trigger>
        </Style.Triggers>
    </Style>

</ResourceDictionary>