public int update(LuongEntities obj)
        {
            int        result   = 0;
            string     strQuery = "update dbo.LuongNhanVien set masoluong='" + obj.MaSoLuong1 + "',songaycong='" + obj.SoNgayCong1 + "',Phucapcv='" + obj.PhuCapCV1 + "',sogiolamthem='" + obj.SoGiolamThem1 + "',hesoluong='" + obj.HeSoLuong1 + "',thuong='" + obj.Thuong1 + "',tamung='" + obj.TamUng1 + "',ngaylap='" + obj.NgayLap1 + "'where MaSoLuong='" + obj.MaSL1 + "'";
            DataConfig config   = new DataConfig();

            result = config.excuteNonquery(strQuery);
            return(result);
        }
        //them csdl
        public int insert(LuongEntities obj)
        {
            int        result   = 0;
            string     strQuery = "insert into LuongNhanVien(MaSoLuong,SoNgayCong,PhuCapCV,SoGioLamThem,HeSoLuong,Thuong,TamUng,NgayLap) values ('" + obj.MaSoLuong1 + "','" + obj.SoNgayCong1 + "','" + obj.PhuCapCV1 + "','" + obj.SoGiolamThem1 + "','" + obj.HeSoLuong1 + "','" + obj.Thuong1 + "','" + obj.TamUng1 + "','" + obj.NgayLap1 + "')";
            DataConfig config   = new DataConfig();   //khoi tao

            result = config.excuteNonquery(strQuery); //thuc thi cau lenh
            return(result);                           //tra ve so ban ghi dc  them
        }