private void InputWatcher_Added(DeviceWatcher sender, DeviceInformation args)
{
var id = args.Id;
// you could use DeviceInformation directly here, using the
// CreateFromIdAsync method. However, that is an async method
// and so adds a bit of delay. I'm using a trimmed down object
// to hold MIDI information rather than using the DeviceInformation class
#if DEBUG
// this is so you can see what the properties contain
//foreach (var p in args.Properties.Keys)
//{
// System.Diagnostics.Debug.WriteLine("Input: " + args.Name + " : " + p + " : " + args.Properties[p]);
//}
#endif
var info = new MidiDeviceInformation();
info.Id = id;
info.Name = args.Name;
info.IsDefault = args.IsDefault;
info.IsEnabled = args.IsEnabled;
ConnectedInputDevices.Add(info);
// notify clients
if (InputDevicesChanged != null)
{
InputDevicesChanged(this, new EventArgs());
}
}
private void InputWatcher_Removed(DeviceWatcher sender, DeviceInformationUpdate args)
{
// remove from our collection the item with the specified ID
var id = args.Id;
var toRemove = (from MidiDeviceInformation mdi in ConnectedInputDevices
where mdi.Id == id
select mdi).FirstOrDefault();
if (toRemove != null)
{
ConnectedInputDevices.Remove(toRemove);
// notify clients
if (InputDevicesChanged != null)
{
InputDevicesChanged(this, new EventArgs());
}
}
}
