} //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)