AudioGraphBackgroundPlayback.App.App_EnteredBackground C# (CSharp) Method

        private void App_EnteredBackground(object sender, EnteredBackgroundEventArgs e)
        {
            // Place the application into "background mode" and note the
            // transition with a flag.
            Debug.WriteLine("Entered background");
            isInBackgroundMode = true;

            // An application may wish to release views and view data
            // at this point since the UI is no longer visible.
            //
            // As a performance optimization, here we note instead that
            // the app has entered background mode with a boolean and
            // defer unloading views until AppMemoryUsageLimitChanging or
            // AppMemoryUsageIncreased is raised with an indication that
            // the application is under memory pressure.
        }