public BtSelectPage(IBtConnection bt)
        {
            InitializeComponent();

            btConnection  = bt;
            pairedDevices = bt.PairedDevices();

            btDevicesListView.ItemsSource = pairedDevices;

            btDevicesListView.ItemSelected += (object sender, SelectedItemChangedEventArgs e) =>
            {
                var deviceName = (string)e.SelectedItem;
                btConnection.ConnectDevice(deviceName);
            };
        }