Move Items Old School

Foreach Post - Original Code.cs

        protected void moveItems(ListControl sendingLB, ListControl receivingLB)
        {
            ListBox temp = new ListBox();
            List<ListItem> tempList = new List<ListItem>();
            Comparison<ListItem> compare = new Comparison<ListItem>(CompareListItems);

            foreach (ListItem li in sendingLB.Items)
                if (li.Selected && receivingLB.Items.FindByText(li.Text) == null)
                    receivingLB.Items.Add(li);
                else
                    temp.Items.Add(li);

            foreach (ListItem li in receivingLB.Items)
                tempList.Add(li);

            tempList.Sort(compare);

            receivingLB.Items.Clear();
            receivingLB.Items.AddRange(tempList.ToArray());

            sendingLB.Items.Clear();

            foreach (ListItem li in temp.Items)
                sendingLB.Items.Add(li);

            receivingLB.ClearSelection();
        }

        int CompareListItems(ListItem li1, ListItem li2)
        {
            return String.Compare(li1.Text, li2.Text);
        }