AppTemplate.MainPage.MainPage C# (CSharp) Method

        public MainPage()
        {
            this.InitializeComponent();

            this.Loaded += this.OnLoaded;

            SystemNavigationManager.GetForCurrentView().BackRequested += this.OnBackRequested;

            if (ApiInformation.IsTypePresent("Windows.Phone.UI.Input.HardwareButtons"))
            {
                this.BackButton.Visibility = Visibility.Collapsed;
            }

            this.DataContextChanged += this.OnDataContextChanged;
        }