Brook.ZhiHuRiBao.App.App_BackRequested C# (CSharp) Метод

        private void App_BackRequested(object sender, BackRequestedEventArgs e)
        {
            Frame rootFrame = GetWindowFrame();
            if (rootFrame == null)
                return;

            if (rootFrame.CanGoBack && e.Handled == false)
            {
                e.Handled = true;
                rootFrame.GoBack();
            }
        }