private void MovieSoldDrop(object sender, DragEventArgs e)
        {
            object       o = e.Data.GetData(DataFormats.Serializable);
            ListViewItem l = (ListViewItem)o;

            DialogResult dr = MessageBox.Show("Are you sure you want to sell " +
                                              l.Text + "?",
                                              "Sell This Video",
                                              MessageBoxButtons.YesNo);

            if (dr == DialogResult.No)
            {
                return;
            }

            //Very important!!  If I did not remove this ListViewItem from the source
            //list I would need to clone this ListViewItem before I add it to the
            //lstSold control.
            lstRentals.Items.Remove(l);
            lstSold.Items.Add((ListViewItem)l);
            lstSold.Items[lstSold.Items.Count - 1].ImageIndex = 0;

            //Look at the genre combo box to see which movie list to delete this
            //ListViewItem from.
            MovieList m = (MovieList)cmbGenre.SelectedItem;

            m.Remove(l);
        }