public ActionResult Lt_Time_Setting(TimeSpan late)
        {
            AspNetTime_Setting ts = db.AspNetTime_Setting.Where(x => x.Id == 1).FirstOrDefault();

            ts.LateTime = late;
            db.SaveChanges();
            return(Json(JsonRequestBehavior.AllowGet));
        }
        public ActionResult Ab_Time_Setting(TimeSpan absent)
        {
            AspNetTime_Setting ts = db.AspNetTime_Setting.Where(x => x.Id == 1).FirstOrDefault();

            ts.AbsentTime = absent;

            db.SaveChanges();
            return(Json(JsonRequestBehavior.AllowGet));
        }