MainWindow.xaml

<dx:ThemedWindow x:Class="DXSample.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:dx="http://schemas.devexpress.com/winfx/2008/xaml/core"
    xmlns:dxb="http://schemas.devexpress.com/winfx/2008/xaml/bars"
    xmlns:ViewModels="clr-namespace:DXSample.ViewModels"        
    xmlns:Common="clr-namespace:DXSample.Common"
    xmlns:dxmvvm="http://schemas.devexpress.com/winfx/2008/xaml/mvvm"
    Title="MainWindow" Height="350" Width="525">
    <dx:ThemedWindow.DataContext>
        <ViewModels:MainViewModel/>
    </dx:ThemedWindow.DataContext>
    <dxmvvm:Interaction.Behaviors>
        <dx:DXMessageBoxService/>
    </dxmvvm:Interaction.Behaviors>

    <dx:ThemedWindow.Resources>

        <DataTemplate DataType="{x:Type ViewModels:BarItemViewModel}">
            <ContentControl>
                <dxb:BarButtonItem 
        			Content="{Binding Caption}"
        			Glyph="{Binding Glyph}"
        			GlyphAlignment="Top"
        			BarItemDisplayMode="ContentAndGlyph"
        			Command="{Binding ExecuteActionCommand}"
                    CommandParameter="{Binding Caption}"/>
            </ContentControl>
        </DataTemplate>

        <DataTemplate DataType="{x:Type ViewModels:GroupBarItemViewModel}">
            <ContentControl>
                <dxb:BarSubItem 
        			Content="{Binding Caption}"
        			Glyph="{Binding Glyph}"
        			GlyphAlignment="Left"
        			BarItemDisplayMode="ContentAndGlyph"
        			ItemLinksSource="{Binding SubItems}"/>
            </ContentControl>
        </DataTemplate>

        <DataTemplate DataType="{x:Type ViewModels:BarItemViewModelBase}">
            <ContentControl>
                <dxb:BarItemSeparator />
            </ContentControl>
        </DataTemplate>

        <DataTemplate DataType="{x:Type ViewModels:StaticBarItemViewModel}">
            <ContentControl>
                <dxb:BarStaticItem Content="{Binding Caption}"/>
            </ContentControl>
        </DataTemplate>

        <DataTemplate x:Key="mainMenuTemplate">
            <ContentControl>
                <dxb:Bar Caption="{Binding Name}" ItemLinksSource="{Binding Items}" IsMainMenu="True"/>
            </ContentControl>
        </DataTemplate>

        <DataTemplate x:Key="statusBarTemplate">
            <ContentControl>
                <dxb:Bar Caption="{Binding Name}" ItemLinksSource="{Binding Items}" IsStatusBar="True">
                    <dxb:Bar.DockInfo>
                        <dxb:BarDockInfo ContainerType="Bottom"/>
                    </dxb:Bar.DockInfo>
                </dxb:Bar>
            </ContentControl>
        </DataTemplate>

        <Common:BarTemplateSelector x:Key="BarTemplateSelector"
             MainMenuTemplate="{StaticResource mainMenuTemplate}"
             StatusBarTemplate="{StaticResource statusBarTemplate}"/>
    </dx:ThemedWindow.Resources>

    <Grid>
        <dxb:BarManager BarsSource="{Binding Bars}" BarTemplateSelector="{StaticResource BarTemplateSelector}"/>
    </Grid>
</dx:ThemedWindow>