//检查该课程是否导入了学生名单 public bool checkImportStuInfos(string t_id, string cou_id, string cou_num) { DataTable dt = teacherBll.checkImportStuInfos(t_id, cou_id, cou_num); if (dt.Rows.Count > 0) { return(true); } else { return(false); } }