public static int TinhTongTienGH(string tenTK) { DataTable dtbKetQua = GioHangDAO.LayGH(tenTK); int tongTien = 0; foreach (DataRow dr in dtbKetQua.Rows) { tongTien += Convert.ToInt32(dr["ThanhTien"]); } return(tongTien); }
public static DataTable LayGH(string tenTK) { return(GioHangDAO.LayGH(tenTK)); }