private void ZoomServiceOnInitializedChanged(object sender, bool initialized) { if (initialized) { VideoDevices = _zoomService.EnumerateVideoDevices()?.ToList(); if (VideoDevices != null && VideoDevices.Count > 0) { SelectedVideoDevice = VideoDevices.First(); } MicDevices = _zoomService.EnumerateMicDevices()?.ToList(); if (MicDevices != null && MicDevices.Count > 0) { SelectedMicDevice = MicDevices.First(); } SpeakerDevices = _zoomService.EnumerateSpeakerDevices()?.ToList(); if (SpeakerDevices != null && SpeakerDevices.Count > 0) { SelectedSpeakerDevice = SpeakerDevices.First(); } } }