Moving ListViewItems Up & Down

Question

I have a ListView (WinForms) in which i want to move items up and down with the click of a button. The items to be moved are the ones who are checked. So if item 2, 6 and 9 are

Answer 1

    private void MoveItems(ListView sender, MoveDirection direction)
    {
        bool valid = sender.SelectedItems.Count > 0 &&
                    ((direction == MoveDirection.Down && (sender.SelectedItems[sender.SelectedItems.Count - 1].Index < sender.Items.Count - 1))
                    || (direction == MoveDirection.Up && (sender.SelectedItems[0].Index > 0)));

        if (valid)
        {                
            bool start = true;
            int first_idx = 0;                
            List items = new List();

            // ambil data
            foreach (ListViewItem i in sender.SelectedItems)
            {
                if (start)
                {
                    first_idx = i.Index;
                    start = false;
                }
                items.Add(i);
            }

            sender.BeginUpdate();

            // hapus
            foreach (ListViewItem i in sender.SelectedItems) i.Remove();

            // insert
            if (direction == MoveDirection.Up)
            {
                int insert_to = first_idx - 1;
                foreach (ListViewItem i in items)
                {
                    sender.Items.Insert(insert_to, i);
                    insert_to++;
                }                    
            }
            else
            {
                int insert_to = first_idx + 1;
                foreach (ListViewItem i in items)
                {
                    sender.Items.Insert(insert_to, i);
                    insert_to++;
                }   
            }                
            sender.EndUpdate();
        }            
    }

Your answers don't work well fren. Here my code work perfect...