Add Menu to NavigationWindow Content
<NavigationWindow x:Class="NavigationApplication.StartupWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="NavigationApplication" Height="300" Width="500" > </NavigationWindow> //File:Window.xaml.vb Imports System Imports System.Collections.Generic Imports System.Text Imports System.Windows Imports System.Windows.Controls Imports System.Windows.Data Imports System.Windows.Documents Imports System.Windows.Input Imports System.Windows.Media Imports System.Windows.Media.Imaging Imports System.Windows.Shapes Namespace NavigationApplication Public Partial Class StartupWindow Inherits System.Windows.Navigation.NavigationWindow Public Sub New() InitializeComponent() Me.Content = New Menu() End Sub End Class End Namespace