public Result <List <Khoa_ett> > selectByPagingKhoa(int current_page)
        {
            Khoa_ctrl temp = new Khoa_ctrl();

            return(temp.select_by_paging_khoa(current_page));
        }
        public int get_page_total_of_khoa()
        {
            Khoa_ctrl temp = new Khoa_ctrl();

            return(temp.page_total_khoa);
        }
        public Result <bool> editKhoa(string ma, string ten, string dc, string dthoai)
        {
            Khoa_ctrl temp = new Khoa_ctrl();

            return(temp.edit_khoa(ma, ten, dc, dthoai));
        }
        public Result <bool> deleteKhoa(string ma)
        {
            Khoa_ctrl temp = new Khoa_ctrl();

            return(temp.delete_khoa(ma));
        }
        public Result <bool> insertKhoa(string ma, string ten, string dc, string dthoai)
        {
            Khoa_ctrl temp = new Khoa_ctrl();

            return(temp.insert_khoa(new Khoa_ett(ma, ten, dc, dthoai)));
        }
        public Result <List <Khoa_ett> > selectByFieldsKhoa(string inputName, string how)
        {
            Khoa_ctrl temp = new Khoa_ctrl();

            return(temp.select_by_fields(inputName, how));
        }
        public Result <List <Khoa_ett> > selectAllKhoa()
        {
            Khoa_ctrl temp = new Khoa_ctrl();

            return(temp.select_all_khoa());
        }