public sealed class DeviceLocationPropertiesUpdatedEventArgs : System.EventArgs 

private void SubscribeToPropertiesEvents()
{
  DeviceLocationPropertiesUpdatedEvent.Subscribe(OnDeviceLocationPropertiesUpdated);
}
private void OnDeviceLocationPropertiesUpdated(DeviceLocationPropertiesUpdatedEventArgs args)
{
  if (args == null)
    return;

  var properties = args.DeviceLocationProperties;

  //  TODO - something with the updated properties
}