public ActionResult RestoreSchedule(int id)
        {
            Schedule         schedule = db.getScheduleById(id);
            List <Yoga_User> list     = db.getScheduleSignUpList(schedule.Schedule_Id);

            db.RestoreSchedule(id);
            db.RestoreScheduleRemoveUsers(id);
            if (list.Count >= 1)
            {
                EmailSender.ClassRestoreEmail(list, schedule);
            }

            return(RedirectToAction("ScheduleList"));
        }