private void ItemListView_SelectionChanged(object sender, SelectionChangedEventArgs e) { bleDeviceDisplay = ResultsListView.SelectedItem as BluetoothLEDeviceDisplay; if (bleDeviceDisplay != null) { PairButton.IsEnabled = !bleDeviceDisplay.DeviceInformation.Pairing.IsPaired; ConnectButton.IsEnabled = ((bool?)bleDeviceDisplay.DeviceInformation.Properties["System.Devices.Aep.IsConnected"] == false) && bleDeviceDisplay.DeviceInformation.Pairing.IsPaired; } }