Come rendere la parte di progettazione di WPF comuni a più windows

così sto facendo questo Visual Basic WPF e ho una barra di navigazione che sarà comune tra più di windows e mi chiedevo se c'è un modo per fare un XAML e di classe solo per questa barra di navigazione e quindi importare in altre finestre, così non devo copiare e incollare il codice stesso ogni volta che creo una nuova finestra.

L'attuale codice:

MainWindow.vb

Class FloorWindow
    Private Sub SetAllInactive()
        ' This function will change all StackPanel objects
        ' of the navGrid to its inactive style which consists
        ' of opacity .1

        Dim childType As String

        For Each child In navGrid.Children
            childType = child.GetType().ToString()
            ' Check if child object of navGrid is a StackPanel
            If childType = "System.Windows.Controls.StackPanel" Then
                child.Opacity = 0.1
            End If
        Next
    End Sub
    Private Sub LogoBtnClick(sender As Object, e As RoutedEventArgs) Handles logoBtn.Click
        Trace.WriteLine("Logo Clicked")
        ' Go to default page
        SetAllInactive()
        floorStack.Opacity = 1
    End Sub

    Private Sub FloorBtnClick(sender As Object, e As RoutedEventArgs) Handles floorBtn.Click
        Trace.WriteLine("Floor Clicked")
        ' Go to floor page and change its stack to active attributes
        SetAllInactive()
        floorStack.Opacity = 1
    End Sub

    Private Sub ClientsBtnClick(sender As Object, e As RoutedEventArgs) Handles clientsBtn.Click
        Trace.WriteLine("Clients Clicked")
        ' Go to floor page and change its stack to active attributes
        SetAllInactive()
        clientsStack.Opacity = 1
    End Sub

    Private Sub SettingsBtnClick(sender As Object, e As RoutedEventArgs) Handles settingsBtn.Click
        Trace.WriteLine("Settings Clicked")
        ' Go to floor page and change its stack to active attributes
        SetAllInactive()
        settingsStack.Opacity = 1
    End Sub
End Class

MainWindow.xaml

<Window x:Class="FloorWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:RestaurantManager"
        xmlns:fa5="http://schemas.fontawesome.com/icons/"
        mc:Ignorable="d"
        Title="Restaurant Floor" Height="450" Width="800">
    <Grid>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="70"/>
            <ColumnDefinition Width="1*"/>
        </Grid.ColumnDefinitions>
        <Grid x:Name="navGrid" Background=" #212121">
            <Grid.RowDefinitions>
                <!-- Height of item menu should be same as width of the outter column -->
                <RowDefinition Height="70"/>
                <RowDefinition Height="70"/>
                <RowDefinition Height="70"/>
                <RowDefinition Height="70"/>
            </Grid.RowDefinitions>
            <!-- Menu Item Defenition Start -->
            <Border Grid.Row="0" BorderBrush="White" BorderThickness="0 0 0 .1"/>
            <Button x:Name="logoBtn" Grid.Row="0" Panel.ZIndex="10" TabIndex="10" Opacity="0"/>
            <TextBlock Grid.Row="0" VerticalAlignment="Center" HorizontalAlignment="Center" FontSize="40" Foreground="#03DAC5">
                E
            </TextBlock>
            <Border Grid.Row="1" BorderBrush="White" BorderThickness="0 0 0 .1"/>
            <Button x:Name="floorBtn" Grid.Row="1" Panel.ZIndex="10" TabIndex="10" Opacity="0"/>
            <StackPanel x:Name="floorStack" Grid.Row="1" VerticalAlignment="Center" HorizontalAlignment="Center">
                <fa5:SvgAwesome Icon="Solid_BorderAll" Width="20" Foreground="White"/>
                <TextBlock Foreground="White" HorizontalAlignment="Center" Margin="0,5,0,0">Floor</TextBlock>
            </StackPanel>
            <Border Grid.Row="2" BorderBrush="White" BorderThickness="0 0 0 .1"/>
            <Button x:Name="clientsBtn" Grid.Row="2" Panel.ZIndex="10" TabIndex="10" Opacity="0"/>
            <StackPanel x:Name="clientsStack" Grid.Row="2" VerticalAlignment="Center" HorizontalAlignment="Center" Opacity=".1">
                <fa5:SvgAwesome Icon="Solid_UserFriends" Width="20" Foreground="White"/>
                <TextBlock Foreground="White" HorizontalAlignment="Center" Margin="0,5,0,0">Clients</TextBlock>
            </StackPanel>
            <Border Grid.Row="3" BorderBrush="White" BorderThickness="0 0 0 .1"/>
            <Button x:Name="settingsBtn" Grid.Row="3" Panel.ZIndex="10" TabIndex="10" Opacity="0"/>
            <StackPanel x:Name="settingsStack" Grid.Row="3" VerticalAlignment="Center" HorizontalAlignment="Center" Opacity=".1">
                <fa5:SvgAwesome Icon="Solid_Cogs" Width="20" Foreground="White"/>
                <TextBlock Foreground="White" HorizontalAlignment="Center" Margin="0,5,0,0">Settings</TextBlock>
            </StackPanel>
            <!-- Menu Item Defenition End -->
        </Grid>
    </Grid>
</Window>