Detect current screen orientation on UWP application.

detect_orientation.cs

        private void Page_Loaded(object sender, RoutedEventArgs e)
        {
            DisplayInformation.GetForCurrentView().OrientationChanged += MainPage_OrientationChanged;
        }

        private void MainPage_OrientationChanged(DisplayInformation info, object args)
        {
            Debug.WriteLine("orientation: " + info.CurrentOrientation);
        }