public ActionResult join_list_detail_delete(int?id)
        {
            tJoinList x = db.tJoinList.FirstOrDefault(m => m.fId == id);

            db.tJoinList.Remove(x);
            db.SaveChanges();
            return(RedirectToAction("join_list_detail"));
        }
        public ActionResult join_list_detail_edit(tJoinList x)
        {
            tJoinList s = db.tJoinList.FirstOrDefault(m => m.fId == x.fId);

            //s.fId = x.fId;
            //s.fActivityId = x.fActivityId;
            //s.fMemberId = x.fMemberId;
            //s.fJoinTime = x.fJoinTime;
            s.fJoinTypeId = x.fJoinTypeId;
            db.SaveChanges();
            return(RedirectToAction("join_list_detail"));
        }
        public ActionResult join_list_detail_edit(int?id)
        {
            tJoinList s = db.tJoinList.FirstOrDefault(m => m.fId == id);

            return(View(s));
        }