Project Server调用PSI关闭任务以进行更新锁定任务

/// <summary>
        /// 锁定和解锁项目任务
        /// </summary>
        /// <param name="projectuid">项目UID</param>
        /// <param name="islock">是否锁定</param>
        /// <returns></returns>
        public bool CloseProjectTask(Guid projectuid, bool islock)
        {
            try
            {
                QueueSystemUtils queuesystemutils = new QueueSystemUtils();

                ProjectDataSet dst = GetProjectByUid(projectuid);
                StatusingWebSvc.ProjectDataSet statusing_pro_dst = new StatusingWebSvc.ProjectDataSet();
                foreach (ProjectWebSvc.ProjectDataSet.TaskRow taskrow in dst.Task)
                {
                    if (taskrow.TASK_LOCKDOWN_BY_MANAGER != islock)
                    {
                        taskrow.TASK_LOCKDOWN_BY_MANAGER = islock;
                        statusing_pro_dst.Task.ImportRow(taskrow);
                    }
                }
                if (statusing_pro_dst.Task.Count > 0)
                {
                    int temp = 0;
                    int total_update_count = 0;
                    int totalcount = statusing_pro_dst.Task.Count;
                    StatusingWebSvc.ProjectDataSet statusing_pro_dst_update = new StatusingWebSvc.ProjectDataSet();
                    foreach (StatusingWebSvc.ProjectDataSet.TaskRow item in statusing_pro_dst.Task)
                    {
                        temp++;
                        total_update_count++;
                        statusing_pro_dst_update.Task.ImportRow(item);
                        if (total_update_count >= 400 || temp >= totalcount)
                        {
                            Guid jobuid = Guid.NewGuid();
                            StatusingClient.QueueLockDownTasks(jobuid, projectuid, statusing_pro_dst_update);
                            queuesystemutils.WaitForQueue(jobuid);
                            total_update_count = 0;
                            statusing_pro_dst_update = new StatusingWebSvc.ProjectDataSet();
                        }

                    }
                }
                return true;
            }
            catch (Exception ex)
            {
                new LogHelper().WriteLine(ex.ToString());
                return false;
            }
        }