Pages versus Windows

you’re using a WPF RibbonWindow as your main shell and want to show multiple Pages (like Person, Article, etc.) inside a Frame (WorkZone) without opening new windows.

The navigation from a button works fine, but now you want to close the current Page (essentially go back to the RibbonWindow view).

Let’s go through the correct and clean way to do that.

1. Use the Frame’s NavigationService Correctly

Since you already have:

And you navigate using:

WorkZone.NavigationService.Navigate(new Uri("PageRSTGruppen.xaml", UriKind.Relative));

To “close” the page (i.e., go back or clear the content), you have a few options depending on what behavior you want.

Option 1: Go back (if navigation history exists)

If you navigated from another page (e.g. a main/home page), you can call this in your Page code-behind:

private void BtnClose_Click(object sender, RoutedEventArgs e)
{
    if (NavigationService.CanGoBack)
        NavigationService.GoBack();
}

This will return to the previous page in the navigation history.

Option 2: Clear the Frame’s content (no back navigation)

If you just want to remove the Page and show an empty area (no navigation history):

In your Page (like PageRSTGruppen.xaml.cs):

private void BtnClose_Click(object sender, RoutedEventArgs e)
{
    // Get the parent frame that hosts this page
    var parentFrame = Window.GetWindow(this)?.FindName("WorkZone") as Frame;
    if (parentFrame != null)
    {
        parentFrame.Content = null; // clear the frame
    }
}

This effectively “closes” the Page from within itself, leaving the Frame blank or ready for another navigation.

Option 3: Return to a specific home/start Page

If you have a “HomePage.xaml” (the default view), you can navigate back to it explicitly:

private void BtnClose_Click(object sender, RoutedEventArgs e)
{
    NavigationService.Navigate(new Uri("HomePage.xaml", UriKind.Relative));
}

This works well if you want to always go back to the start screen.

Optional: Disable Navigation Journal (if you don’t want history)

If you don’t want WPF to remember previous pages (so Back doesn’t work), add this to your Frame:

And in code-behind after navigation:

WorkZone.NavigationService.RemoveBackEntry();

This keeps navigation one-way (cleaner for simple page switching).

Recommended Pattern for RibbonWindow Apps

If you’re planning to have multiple “modules” (Persons, Articles, etc.), it’s cleanest to:

• Keep the RibbonWindow as a shell

• Use the Frame to load pages dynamically

• Add a helper method in the RibbonWindow for navigation:

public void NavigateToPage(Page page)
{
    WorkZone.Content = page;
}

Then from anywhere (even inside a Page), you can do:

((MainWindow)Application.Current.MainWindow).NavigateToPage(new PageRSTGruppen());

That gives you full control without worrying about the navigation stack.