public List <taiKhoan> getAllAcc()
        {
            QLCHDCEntities dbAcc   = new QLCHDCEntities();
            var            listAcc = dbAcc.taiKhoans.ToList();

            return(listAcc);
        }
        public List <thanhToan> getAllConsumeP()
        {
            QLCHDCEntities dbConsP   = new QLCHDCEntities();
            var            listConsP = dbConsP.thanhToans.ToList();

            return(listConsP);
        }
        public List <khachHang> getAllKhachHang()
        {
            QLCHDCEntities dbKhachHang = new QLCHDCEntities();
            var            listKH      = dbKhachHang.khachHangs.ToList();

            return(listKH);
        }
        public List <doChoi> getAllDC()
        {
            QLCHDCEntities dbDC   = new QLCHDCEntities();
            var            listDC = dbDC.doChois.ToList();

            return(listDC);
        }
        public List <nhanVien> getAllNhanVien()
        {
            QLCHDCEntities dbNhanVien   = new QLCHDCEntities();
            var            listNhanVien = dbNhanVien.nhanViens.ToList();

            return(listNhanVien);
        }