inabox/inabox.wpf/MasterDetailPanel/MasterDetailPanel.xaml

<UserControl x:Class="InABox.Wpf.MasterDetailPanel"
             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:dynamicGrid="clr-namespace:InABox.DynamicGrid"
             mc:Ignorable="d"
             d:DesignHeight="300" d:DesignWidth="300" Background="WhiteSmoke">
    
    <dynamicGrid:DynamicSplitPanel 
        x:Name="_splitPanel" 
        View="Combined" 
        AnchorWidth="300" 
        MasterCaption="{Binding MasterCaption}"
        DetailCaption="{Binding DetailCaption}"
        OnChanged="SplitPanel_OnChanged">

        <dynamicGrid:DynamicSplitPanel.Header>
            <Border 
                BorderBrush="Gray" 
                BorderThickness="0.75" 
                Background="WhiteSmoke" 
                Height="25">
                <Label 
                    x:Name="_header" 
                    HorizontalContentAlignment="Center"
                    VerticalContentAlignment="Center" />
            </Border>
        </dynamicGrid:DynamicSplitPanel.Header>

        <dynamicGrid:DynamicSplitPanel.Detail>
            <dynamicGrid:DynamicTabControl 
                x:Name="_tabControl" 
                Grid.Column="2" 
                Grid.Row="0" 
                Grid.RowSpan="2"
                SelectionChanged="Pages_OnChanged" >
                
            </dynamicGrid:DynamicTabControl>
        </dynamicGrid:DynamicSplitPanel.Detail>

    </dynamicGrid:DynamicSplitPanel>
</UserControl>