如何从窗口调用 xaml 页面？ (WPF)

Question

I'm a beginner at WPF so it might be a silly question.

To call one page from page, I have done something similar to the following code:

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

But now I have created a Window and when trying to execute the previous code an error is generated. Any suggestions or comments are welcome.

The error:

With solution:

Answer 1

Solution:

NavigationWindow _navigationWindow = new NavigationWindow();

_navigationWindow.Height = this.Height;
_navigationWindow.Width = this.Width;
_navigationWindow.Show();

_navigationWindow.Navigate(new MyPageXML());