CgwMonitorManage.Service.MonitorManageService.StopReceiveVideoByPipe C# (CSharp) Method

        public SmcErr StopReceiveVideoByPipe(string cameraNo)
        {
            SmcErr err = new CgwError();
            NLogEx.LoggerEx logEx = new NLogEx.LoggerEx(log);

            err = CheckSession(currentSessionID);
            //调任何接口前 需要判断监控平台是否加载成功
            if (err.IsSuccess())
            {
                err = VideoMonitorManage.Instance().StopReceiveVideo(cameraNo);
                VideoPipe videoPipe = VideoPipeManage.Instance().DeleteVideoPipe(cameraNo);
                if (videoPipe == null)
                {
                    logEx.Error("MonitorManageService StopReceiveVideoByPipe failed,VideoPipe is null,cameraNo = {0}", cameraNo);
                    err.SetErrorNo(CgwError.STOP_RECEIVE_VIDEO_FAILED);
                }
                else
                {
                    videoPipe.Stop();
                }
            }
            if (err.IsSuccess())
            {
                logEx.Info("MonitorManageService StopReceiveVideoByPipe  Successful,Current Cgw IP is : {0}", CgwConst.ClientIp);
            }
            else
            {
                logEx.Error("MonitorManageService StopReceiveVideoByPipe failed,ErrNo :{0}", err.ErrNo);
            }
            return err;
        }