public void Start()
        {
            resultCollection.Clear();

            // Get the device selector chosen by the UI then add additional constraints for devices that
            // can be paired or are already paired.

            /*
             * string selector = BluetoothDevice.GetDeviceSelectorFromPairingState(true);
             *
             * DeviceWatcher deviceWatcher = DeviceInformation.CreateWatcher(
             *      selector,
             *      null // don't request additional properties for this sample
             *      );
             */

            string selector = "System.Devices.Aep.ProtocolId:=\"{e0cbf06c-cd8b-4647-bb8a-263b43f0f974}\"";

            DeviceWatcher deviceWatcher = DeviceInformation.CreateWatcher(
                selector,
                null,     // don't request additional properties for this sample
                DeviceInformationKind.AssociationEndpoint);

            deviceWatcherHelper.StartWatcher(deviceWatcher);
        }
        public void Start()
        {
            resultCollection.Clear();

            string selector = "System.Devices.Aep.ProtocolId:=\"{bb7bb05e-5972-42b5-94fc-76eaa7084d49}\"";

            DeviceWatcher deviceWatcher = DeviceInformation.CreateWatcher(
                selector,
                null,
                DeviceInformationKind.AssociationEndpoint);

            deviceWatcherHelper.StartWatcher(deviceWatcher);
        }