How can a universal windows app have multiple independent windows (Like Microsoft's app “Photos”)?

Question

I do know how to open additional windows using TryShowAsStandaloneAsync. However, if the original window is closed - TryShowAsStandaloneAsync fails (Wh

Answer 1

I'm not sure if you're using Dispatcher.RunAsync to create the view, i.e:

async private void Button_Click(object sender, RoutedEventArgs e)
 {
 CoreApplicationView newView = CoreApplication.CreateNewView();
 int newViewId = 0;

await newView.Dispatcher.RunAsync(CoreDispatcherPriority.High, () =>
 {
 var frame = new Frame();
 frame.Navigate(typeof(MainPage), newViewId);
 Window.Current.Content = frame;

// In Windows 10 UWP we need to activate our view first.
 // Let's do it now so that we can use TryShow...() and SwitchAsync().
 Window.Current.Activate();

newViewId = ApplicationView.GetForCurrentView().Id;
 });

 bool viewShown = await ApplicationViewSwitcher.TryShowAsStandaloneAsync(newViewId);
 }

for more info, please refer to : https://daxsnippets.wordpress.com/2015/07/09/windows-10-create-views/