public override void ViewDidLoad()
        {
            base.ViewDidLoad();
            fileAccessService = new FileAccessTestService();

            RefreshUI(true);

            if (contentToWrite == null)
            {
                DispatchQueue.DefaultGlobalQueue.DispatchAsync(() =>
                    {
                        contentToWrite = PerformanceTestService.Instance.CalculatePi(digits);
                        DispatchQueue.MainQueue.DispatchAsync(() => RefreshUI(false));
                    });
            }
        }
        protected override void OnCreate(Bundle savedInstanceState)
        {
            base.OnCreate(savedInstanceState);
            SetContentView(Resource.Layout.FileAccessTest);
            Title = GetString(Resource.String.menuFileAccess);

            timeLabel = FindViewById<TextView>(Resource.Id.timeLabel);
            resultView = FindViewById<TextView>(Resource.Id.resultView);
            readButton = FindViewById<Button>(Resource.Id.readButton);
            writeButton = FindViewById<Button>(Resource.Id.writeButton);

            readButton.Click += StartReading;
            writeButton.Click += StartWriting;
            PerformanceTestService.Instance.PiCalculationCompleted += PiCalculationCompleted;

            fileAccessService = new FileAccessTestService(this);

            if (contentToWrite == null)
            {
                progressDialog = ProgressDialog.Show(this, "Przetwarzanie...", "");
                new Thread(new Runnable(() => { PerformanceTestService.Instance.CalculatePi(digits); })).Start();
            }
        }