How to click a button of the page to change the source of the frame of Windows?

Question

I have a WPF project, I add a frame in the Windows,the source of the frame is the page. I want to achieve clicking a button in the page to change the page of the frame.

Answer 1

EDIT: A functional solution can look like:

MainWindow XAML:

MainWindow cs:

 frmMainContent.Source = new Uri("test1.xaml", UriKind.Relative); // initialize frame with the "test1" view

test1 XAML:

    Go to page 2

test1 cs:

private void ButtonBase_OnClick(object sender, RoutedEventArgs e)
    {
        NavigationService ns = NavigationService.GetNavigationService(this);
        ns.Navigate(new Uri("test2.xaml", UriKind.Relative));
    }

test2 XAML:

  
         Go to page 1
    

test2 cs:

 NavigationService ns = NavigationService.GetNavigationService(this);
            ns.Navigate(new Uri("test1.xaml", UriKind.Relative));

This is a working solution using NavigationService.