public DataSet TimKiem(ref string error, string GiaTri)
        {
            SanPhamBLL sanpham = new SanPhamBLL();
            DataSet    data    = new DataSet();

            return(sanpham.DSSanPhamTheoTen(ref error, GiaTri));
        }
        public DataSet TimKiem(ref string error, string GiaTri)
        {
            SanPhamBLL sanpham = new SanPhamBLL();
            DataSet    data    = new DataSet();
            int        result  = Int32.Parse(GiaTri);

            return(sanpham.TimSPTheoID(ref error, result));
        }