prs/prs.desktop/Forms/ImportBillWindow.xaml

<wpf:ThemableWindow x:Class="PRSDesktop.ImportBillWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:syncfusion="http://schemas.syncfusion.com/wpf"
		xmlns:wpf="clr-namespace:InABox.Wpf;assembly=InABox.Wpf"
		xmlns:dynamicGrid="clr-namespace:InABox.DynamicGrid;assembly=InABox.DynamicGrid"
		mc:Ignorable="d"
        Title="ImportBillWindow" Height="450" Width="800" Padding="5">
    <Window.Resources>
        <ControlTemplate x:Key="VerticalSplitter">
            <Grid Background="{TemplateBinding Background}" Width="4">
                <Button x:Name="PART_Left" Visibility="Collapsed" />
                <Button x:Name="PART_Right" Visibility="Collapsed" />
                <StackPanel Margin="0" Orientation="Vertical" VerticalAlignment="Center" HorizontalAlignment="Center">
                    <Ellipse Fill="Silver" HorizontalAlignment="Center" Height="2" Width="2" Opacity="1"
                             Margin="0,2,0,0" />
                    <Ellipse Fill="Silver" HorizontalAlignment="Center" Height="2" Width="2" Opacity="1"
                             Margin="0,2,0,0" />
                    <Ellipse Fill="Silver" HorizontalAlignment="Center" Height="2" Width="2" Opacity="1"
                             Margin="0,2,0,0" />
                    <Ellipse Fill="Silver" HorizontalAlignment="Center" Height="2" Width="2" Opacity="1"
                             Margin="0,2,0,0" />
                    <Ellipse Fill="Silver" HorizontalAlignment="Center" Height="2" Width="2" Opacity="1"
                             Margin="0,2,0,0" />
                    <Ellipse Fill="Silver" HorizontalAlignment="Center" Height="2" Width="2" Opacity="1"
                             Margin="0,2,0,0" />
                    <Ellipse Fill="Silver" HorizontalAlignment="Center" Height="2" Width="2" Opacity="1"
                             Margin="0,2,0,0" />
                </StackPanel>
            </Grid>
        </ControlTemplate>
    </Window.Resources>
    <Grid>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="*" />
            <ColumnDefinition Width="4" />
            <ColumnDefinition Width="Auto" />
        </Grid.ColumnDefinitions>
        <Grid.RowDefinitions>
            <RowDefinition Height="*" />
            <RowDefinition Height="Auto" />
        </Grid.RowDefinitions>

        <dynamicGrid:DynamicTabControl 
            x:Name="Documents" 
            Grid.Row="0" 
            Grid.Column="0" 
            Grid.ColumnSpan="3"
            SelectionChanged="Documents_SelectionChanged" />

        <syncfusion:SfGridSplitter Grid.Row="0" Grid.Column="1" ResizeBehavior="PreviousAndNext" Width="4"
                                   Background="Transparent" Template="{StaticResource VerticalSplitter}">

            <syncfusion:SfGridSplitter.PreviewStyle>
                <Style TargetType="Control">
                    <Setter Property="Background" Value="Gray" />
                    <Setter Property="Template">
                        <Setter.Value>
                            <ControlTemplate TargetType="Control">
                                <Grid x:Name="Root" Opacity="0.5">
                                    <Rectangle Fill="{TemplateBinding Background}" />
                                </Grid>
                            </ControlTemplate>
                        </Setter.Value>
                    </Setter>
                </Style>
            </syncfusion:SfGridSplitter.PreviewStyle>

        </syncfusion:SfGridSplitter>

        <DockPanel Grid.Row="0" Grid.Column="2" MinWidth="300">
            <Border DockPanel.Dock="Top" BorderBrush="Gray" BorderThickness="0.75">
                <Grid>
                    <Grid.ColumnDefinitions>
                        <ColumnDefinition Width="Auto" />
                        <ColumnDefinition Width="*" />
                    </Grid.ColumnDefinitions>
                    <Grid.RowDefinitions>
                        <RowDefinition Height="Auto" />
                        <RowDefinition Height="Auto" />
                        <RowDefinition Height="Auto" />
                        <RowDefinition Height="Auto" />
                    </Grid.RowDefinitions>
                    <Label Grid.Row="0" Grid.Column="0" Content="Order #" />
                    <Label Grid.Row="1" Grid.Column="0" Content="Supplier" />
                    <Label Grid.Row="2" Grid.Column="0" Content="Invoice #" />
                    <Label Grid.Row="3" Grid.Column="0" Content="Date" />
                </Grid>
            </Border>
            <Border DockPanel.Dock="Top" BorderBrush="Gray" BorderThickness="0.75" Margin="0,4,0,0" />
        </DockPanel>

        <StackPanel Grid.Row="1" Grid.Column="0" Grid.ColumnSpan="2" HorizontalAlignment="Right"
                    Orientation="Horizontal" Margin="0,5,0,0">
            <Button Content="OK" Width="80" Height="30" />
            <Button Content="Cancel" Width="80" Height="30" />
        </StackPanel>

    </Grid>
</wpf:ThemableWindow>