Update version

samples/NotificationFlyoutSample/NowPlayingPage.xaml.cs

@@ -0,0 +1,29 @@
+using System;
+using Windows.UI.Xaml.Controls;
+using Windows.UI.Xaml.Navigation;
+
+namespace NotificationFlyoutSample
+{
+    public sealed partial class NowPlayingPage : Page
+    {
+        public NowPlayingPage()
+        {
+            InitializeComponent();
+
+            ViewModel = new NowPlayingPageViewModel();
+            DataContext = ViewModel;
+        }
+ 
+        public NowPlayingPageViewModel ViewModel { get; }
+
+        protected override void OnNavigatedTo(NavigationEventArgs args)
+        {
+            if (DataContext is INavigation navigation)
+            {
+                navigation.OnNavigatedTo();
+            }
+
+            base.OnNavigatedTo(args);
+        }
+    }
+}