CgwMonitorManage.Common.VideoPipeManage.AddVideoPipe C# (CSharp) Method

        public VideoPipe AddVideoPipe(string cameraNO)
        {
            if (listVideoPipeOperateLock.TryEnterWriteLock(CgwConst.ENTER_PIPE_LOCK_WAIT_TIME))
            {
                try
                {
                    int index = listVideoPipe.FindIndex((x) => { return x.CameraNo == cameraNO ? true : false; });

                    if (index == -1)
                    {
                        string pipeName = GetVideoPipeName(cameraNO);
                        VideoPipe pipe = new VideoPipe(pipeName);
                        pipe.PipeName = pipeName;
                        pipe.CameraNo = cameraNO;

                        if (pipeName != string.Empty)
                        {
                            listVideoPipe.Add(pipe);
                            return pipe;
                        }
                    }
                }
                finally
                {
                    listVideoPipeOperateLock.ExitWriteLock();
                }
            }
            return null;
        }