List的Sort自訂排序執行個體

List<UnRecruitInfo> recreuitList = dic["招聘會"] as List<UnRecruitInfo>;
                //需要對招聘會的列表重新排序
                //定序：召開時間>=今天的，進行順排(從今天到將來)，其他的順序不變(從今天到過去，即到期的)
                DateTime now = DateTime.Parse(DateTime.Now.ToShortDateString()),
                         aTime,
                         bTime;
                recreuitList.Sort(delegate(UnRecruitInfo a, UnRecruitInfo b)
                {//排序開始
                    aTime = DateTime.Parse(a.RecTime.ToShortDateString());
                    bTime = DateTime.Parse(b.RecTime.ToShortDateString());
                    if (a.RecTime >= now && b.RecTime >= now)
                    {//順排(從小到大)

                        if (aTime < bTime) return -1;
                        else if (aTime > bTime) return 1;
                        else return 0;
                    }
                    else
                    {//倒排(從大到小)
                        if (aTime < bTime) return 1;
                        else if (aTime > bTime) return -1;
                        else return 0;
                    }
                });
                rptZQZP.DataSource = recreuitList;
                rptZQZP.DataBind();