public List <TrainInfo> FindBystarttime() { string sql = "select * from traininfo where DeleteMark!=true ORDER BY StartTime desc limit 4"; List <TrainInfo> list = trainInfoDal.FindList(sql).ToList(); for (int i = 0; i < list.Count; i++) { list[i].PhotoID = adminurl + list[i].PhotoID; } return(list); }