Move Items using LINQ

ForeachRefactor.cs

        protected void moveItems(ListControl source, ListControl destination)
        {
            var getListItemsFrom = new Func<ListControl, List<ListItem>>
                                           (x => x.Items.Cast<ListItem>().ToList());

            var selectedItems = getListItemsFrom(source).Where(x => x.Selected);
            var nonSelectedItems = getListItemsFrom(source).Where(x => !x.Selected);
            var currentDestinationItems = getListItemsFrom(destination);

            //Thanks Ryan for the .Except instead of the .Where(not)
            currentDestinationItems.AddRange(selectedItems.Except(currentDestinationItems));

            ReloadItemsFor(destination, /*with*/ currentDestinationItems);
            ReloadItemsFor(source, /*with*/ nonSelectedItems);

            destination.ClearSelection();
        }

        private void ReloadItemsFor(ListControl listControl, IEnumerable<ListItem> itemsToAdd)
        {
            listControl.Items.Clear();
            listControl.Items.AddRange(itemsToAdd.OrderBy(x => x.Text).ToArray());
        }