ต้องการบันทึกข้อมูลจาก DataGridView ลง Database หลายๆแถว

private void saveSalesOrder_Click(object sender, EventArgs e)
        {
            try
            {
                OleDbConnection OleDbConn = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0; Data Source=SparesStore.mdb;");
                OleDbCommand OleDbCmd = new OleDbCommand();
                OleDbCmd.Connection = OleDbConn;
                OleDbCmd.CommandText = "INSERT INTO SalesOrder VALUES (customer_id, customer_name, invoice_id, date, invoice_product_id, invoice_product, invoice_quantity, invoice_unit, invoice_price, invoice_amount)";
                OleDbConn.Open();

                OleDbCmd.Parameters.Add("@รหัสลูกค้า", OleDbType.VarChar).Value = customer_id.Text;
                OleDbCmd.Parameters.Add("@ชื่อ", OleDbType.VarChar).Value = customer_name.Text;
                OleDbCmd.Parameters.Add("@เลขที่", OleDbType.VarChar).Value = invoice_id.Text;
                OleDbCmd.Parameters.Add("@วันที่", OleDbType.Date).Value = date.Text;

                for (int i = 0; i <= salesOrderView.RowCount - 1; ++i)
                {
                    OleDbCmd.Parameters.Add(new OleDbParameter("@รหัสสินค้า", salesOrderView.Rows[i].Cells[0].Value));
                    OleDbCmd.Parameters.Add(new OleDbParameter("@สินค้า", salesOrderView.Rows[i].Cells[1].Value));
                    OleDbCmd.Parameters.Add(new OleDbParameter("@จำนวน", salesOrderView.Rows[i].Cells[2].Value));
                    OleDbCmd.Parameters.Add(new OleDbParameter("@หน่วยนับ", salesOrderView.Rows[i].Cells[3].Value));
                    OleDbCmd.Parameters.Add(new OleDbParameter("@ราคา", salesOrderView.Rows[i].Cells[4].Value));
                    OleDbCmd.Parameters.Add(new OleDbParameter("@จำนวนเงิน", salesOrderView.Rows[i].Cells[5].Value));

                    OleDbCmd.ExecuteNonQuery();
                }
                OleDbConn.Close();

                MessageBox.Show("บันทึกสำเร็จ");

                customer_id.Clear();
                customer_name.Clear();
                invoice_id.Clear();
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.ToString());
            }
            //salesOrderView.Rows.Clear();
        }