private async void ButtonConnectToDevice_Click(object sender, RoutedEventArgs e)
{
var selection = COMcombobox.SelectedItem;
DeviceListEntry entry = null;
if (selection != null)
{
var obj = selection;
entry = (DeviceListEntry)obj;
if (entry != null)
{
// Create an EventHandlerForDevice to watch for the device we are connecting to
EventHandlerForDevice.CreateNewEventHandlerForDevice();
// Get notified when the device was successfully connected to or about to be closed
EventHandlerForDevice.Current.OnDeviceConnected = this.OnDeviceConnected;
EventHandlerForDevice.Current.OnDeviceClose = this.OnDeviceClosing;
// It is important that the FromIdAsync call is made on the UI thread because the consent prompt, when present,
// can only be displayed on the UI thread. Since this method is invoked by the UI, we are already in the UI thread.
Boolean openSuccess = await EventHandlerForDevice.Current.OpenDeviceAsync(entry.DeviceInformation, entry.DeviceSelector);
// Disable connect button if we connected to the device
UpdateConnectDisconnectButtonsAndList(!openSuccess);
if (openSuccess)
{
comText.IsReadOnly = false;
ResetReadCancellationTokenSource();
ResetWriteCancellationTokenSource();
IsReadTaskPending = true;
DataReaderObject = new DataReader(EventHandlerForDevice.Current.Device.InputStream);
await ReadAsync(ReadCancellationTokenSource.Token);
}
}
}
}
