WinUIGallery-TitleBar

App.xaml

<ResourceDictionary.ThemeDictionaries>
    <ResourceDictionary x:Key="Light">
        <SolidColorBrush x:Key="NavigationViewExpandedPaneBackground" Color="Transparent" />
    </ResourceDictionary>
    <ResourceDictionary x:Key="Dark">
        <SolidColorBrush x:Key="NavigationViewExpandedPaneBackground" Color="Transparent" />
    </ResourceDictionary>
    <ResourceDictionary x:Key="HighContrast">
        <SolidColorBrush x:Key="NavigationViewExpandedPaneBackground" Color="Transparent" />
    </ResourceDictionary>
</ResourceDictionary.ThemeDictionaries>

<Thickness x:Key="NavigationViewContentMargin">0,48,0,0</Thickness>

App.xaml.cs

new ThemeManager(m_window, new ThemeOptions
{
    TitleBarCustomization = new TitleBarCustomization
    {
        TitleBarType = TitleBarType.Window
    }
});

MainWindow.xaml

<Grid Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">
    <Grid.ColumnDefinitions>
        <ColumnDefinition Width="Auto" />
        <ColumnDefinition />
    </Grid.ColumnDefinitions>
    <Border
        x:Name="AppTitleBar"
        Grid.Column="1"
        Height="{Binding ElementName=NavigationViewControl, Path=CompactPaneLength}"
        Margin="48,0,0,0"
        VerticalAlignment="Top"
        Canvas.ZIndex="1"
        IsHitTestVisible="True">
        <StackPanel Orientation="Horizontal">
            <Image Width="18" Source="ms-appx:///Assets/Tiles/TitlebarLogo.png" />
            <TextBlock
                x:Name="AppTitle"
                Margin="16,0,0,0"
                VerticalAlignment="Center"
                Style="{StaticResource CaptionTextBlockStyle}"
                Text="App" />
        </StackPanel>
    </Border>
    <NavigationView Name="NavigationViewControl" 
                    Grid.Column="1"
                    Canvas.ZIndex="0" 
                    IsTitleBarAutoPaddingEnabled="True">
        <NavigationView.MenuItems>
            <NavigationViewItem Content="asd"/>
            <NavigationViewItem Content="asd"/>
            <NavigationViewItem Content="asd"/>
            <NavigationViewItem Content="asd"/>
            <NavigationViewItem Content="asd"/>
        </NavigationView.MenuItems>
    </NavigationView>
</Grid>

MainWindow.xaml.cs

public MainWindow()
{
    this.InitializeComponent();
    ExtendsContentIntoTitleBar = true;
    SetTitleBar(AppTitleBar);
}