protected void btnhoantat_Click(object sender, EventArgs e) { try { ns.tensach = txttensach.Text; ns.dongia = txtdongia.Text; ns.donvitinh = txtdonvitinh.Text; ns.mota = txtmota.Text; ns.macd = int.Parse(ddmachude.Text.ToString()); ns.hinhminhhoa = txtpath.Text; ns.manxb = int.Parse(ddmanhaxuatban.Text.ToString()); ns.ngaycapnhat = txtngaycapnhat.Text; ns.tentacgia = txttentacgia.Text; ns.insert(ns); } catch (SqlException ex) { lblthongbao.Text = ex.Message.ToString(); } }