System.InvalidOperationException: 'Window must be the root of the tree. Cannot add Window as a child of Visual.'

Question

I'm currently working on a project that needs to navigate between a Window and a Page. I've managed to navigate between a Window to a Page using the following code:

    public void AboutButton_Click(object sender, RoutedEventArgs e)
    {
        About about = new About();
        this.Content = about.Content;

    }

However, when I try to navigate back to my Window using this code:

    public void HomeButton_Click(object sender, RoutedEventArgs e)
    {
        MainWindow home = new MainWindow();
        this.Content = home;


    }

It displays the error that is: System.InvalidOperationException: 'Window must be the root of the tree. Cannot add Window as a child of Visual.' I understand now that you cannot navigate back to a Window using a Page, however is there a workaround to this? Something I can implement without too much redesigning of my entire code? Please let me know if you need anymore information!

Reece

Answer 1

I will give you a workarount with a demo:

MainWindow.xaml

<Frame x:Name="MyFrame"></Frame>  
<Button Content="Button" HorizontalAlignment="Left" VerticalAlignment="Top" Width="75" Click="AboutButton_Click"/>  

MainWindow.xaml.cs

Answer 2

Parent win!