protected override void doUpdate(Event en) { MySql.Data.MySqlClient.MySqlTransaction trc = m_connection.BeginTransaction(); m_command.Transaction = trc; try { OpeningStock e = (OpeningStock)en; m_command.CommandText = e.GetUpdateSQL(); m_command.ExecuteNonQuery(); foreach (OpeningStockItem sti in e.EVENT_ITEMS) { if (sti.ID > 0) { m_command.CommandText = sti.GetUpdateSQL(); m_command.ExecuteNonQuery(); } else { m_command.CommandText = sti.GetInsertSQL(); m_command.ExecuteNonQuery(); m_command.CommandText = OpeningStockItem.SelectMaxIDSQL(); sti.ID = Convert.ToInt32(m_command.ExecuteScalar()); } } m_command.CommandText = OpeningStockItem.DeleteUpdate(e.ID, e.EVENT_ITEMS); m_command.ExecuteNonQuery(); trc.Commit(); } catch (Exception x) { trc.Rollback(); throw x; } }