private void buttonAddOption_Click(object sender, EventArgs e) { AddOptionForm aoptf = new AddOptionForm(ss.Sigma_x); if (aoptf.ShowDialog() == DialogResult.OK) { Option newOpt = aoptf.opt; dataGridViewOption.Rows.Add(new object[] { newOpt.Value, newOpt.StrikePrice, newOpt.DaysTilExpiry, newOpt.Type, PriceOption(newOpt) }); } }