private void btnCancelFlight_Click(object sender, EventArgs e) { int index = dgvMaganerFlight.SelectedRows[0].Index; if (dgvMaganerFlight.Rows[index].DefaultCellStyle.BackColor == Color.Red) { dgvMaganerFlight.Rows[index].DefaultCellStyle.BackColor = Color.White; } else { dgvMaganerFlight.Rows[index].DefaultCellStyle.BackColor = Color.Red; } scheduleBUS.setComfirm(Convert.ToInt32(dgvMaganerFlight.Rows[index].Cells[9].Value)); }