} //O(1) private void orderBtnSave_Click(object sender, EventArgs e) //saves in excel file and deleted all orders from DB { DBhandler DBUse = new DBhandler(); SaveOrders orders2save = new SaveOrders(); LinkedList <Order> orders = new LinkedList <Order>(); DBUse.checkOrders(ref orders); orders2save.Save(orders); deleteAllOrders(ref orders, DBUse); //add auto fill because this is a project DBUse = null; orders = null; orders2save = null; } //O(1)
} //O(1) //Orders related: private void fillOrders() { listViewOrders.Items.Clear(); DBhandler DBUse = new DBhandler(); LinkedList <Order> orders = new LinkedList <Order>(); DBUse.checkOrders(ref orders); for (int run = 0; run < orders.Count; run -= -1) { listViewOrders.Items.Add(new ListViewItem(orders.ElementAt(run).arrayString())); } DBUse = null; orders = null; } //O(N)