private async Task MeetingModeChangedEventHandler(MeetingMode meetingMode) { CurModeName = EnumHelper.GetDescription(typeof(MeetingMode), meetingMode); if (_sdkService.IsSpeaker) { AsynCallResult result = await _sdkService.SendUIMessage((int)_viewLayoutService.MeetingMode, _viewLayoutService.MeetingMode.ToString(), _viewLayoutService.MeetingMode.ToString().Length, null); HasErrorMsg(result.m_rc.ToString(), result.m_message); } }