DetailView.xaml

<UserControl x:Class="DXSample.View.DetailView"
    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:dxwui="http://schemas.devexpress.com/winfx/2008/xaml/windowsui"
    xmlns:dxwuii="http://schemas.devexpress.com/winfx/2008/xaml/windowsui/internal"
    xmlns:dxmvvm="http://schemas.devexpress.com/winfx/2008/xaml/mvvm" 
    xmlns:ViewModel="clr-namespace:DXSample.ViewModel" 
    mc:Ignorable="d" d:DesignHeight="300" d:DesignWidth="300" 
    DataContext="{dxmvvm:ViewModelSource Type={x:Type ViewModel:DetailViewModel}}">
    <Grid>
        <dxwui:PageAdornerControl Header="Detail View">
            <dxwui:PageAdornerControl.HeaderTemplate>
                <DataTemplate>
                    <Grid>
                        <Grid.ColumnDefinitions>
                            <ColumnDefinition/>
                            <ColumnDefinition Width="Auto" />
                        </Grid.ColumnDefinitions>
                        <TextBlock Text="{Binding}" />
                        <Button Grid.Column="1" Content="Go Forward" HorizontalAlignment="Right" FontSize="14" Command="{Binding DataContext.NavigateForwardCommand, RelativeSource={RelativeSource AncestorType=dxwuii:NavigationHeaderControl}}" />
                    </Grid>
                </DataTemplate>
            </dxwui:PageAdornerControl.HeaderTemplate>
            <Button HorizontalAlignment="Center" VerticalAlignment="Center" Content="Next Detail View" Padding="4" Margin="2" Command="{Binding NavigateNextDetailCommand}"/>
        </dxwui:PageAdornerControl>
    </Grid>
</UserControl>