prs/prs.desktop/Panels/Jobs/JobBillOfMaterialsPanel.xaml

<UserControl x:Class="PRSDesktop.JobBillOfMaterialsPanel"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
             xmlns:local="clr-namespace:PRSDesktop"
             xmlns:dynamicgrid="clr-namespace:InABox.DynamicGrid;assembly=InABox.Wpf"
             mc:Ignorable="d"
             d:DesignHeight="450" d:DesignWidth="800">
    <dynamicgrid:DynamicSplitPanel View="Combined" AnchorWidth="500" AllowableViews="Combined">

        <dynamicgrid:DynamicSplitPanel.Header>
            <Border BorderBrush="Gray" BorderThickness="0.75" Background="WhiteSmoke" Height="25">
                <Label Content="Bills Of Materials" HorizontalContentAlignment="Center"
                       VerticalContentAlignment="Center" />
            </Border>
        </dynamicgrid:DynamicSplitPanel.Header>

        <dynamicgrid:DynamicSplitPanel.Master>
            <local:JobBillOfMaterialsGrid x:Name="BillsOfMaterials" OnSelectItem="BillsOfMaterials_OnSelectItem" />
        </dynamicgrid:DynamicSplitPanel.Master>

        <dynamicgrid:DynamicSplitPanel.DetailHeader>
            <Border BorderBrush="Gray" BorderThickness="0.75" Background="WhiteSmoke" Height="25">
                <Label Content="Material Items" HorizontalContentAlignment="Center" VerticalContentAlignment="Center" />
            </Border>
        </dynamicgrid:DynamicSplitPanel.DetailHeader>

        <dynamicgrid:DynamicSplitPanel.Detail>
            <local:JobBillOfMaterialsItemGrid x:Name="BillOfMaterialsItems" />
        </dynamicgrid:DynamicSplitPanel.Detail>

    </dynamicgrid:DynamicSplitPanel>

</UserControl>