how to bind listbox items to gridview ?

GridView1.DataSource = ListBox1.DataSource

GridView1.DataSource = getDataSource(ListBox1.Items);

 private DataTable getDataSource(ListItemCollection listItemCollection)
        {
            DataTable dtTemp = new DataTable();
            dtTemp.Columns.Add("MyItems");
            foreach (ListItem item in listItemCollection)
            {
                DataRow drTemp = dtTemp.NewRow();
                drTemp["MyItems"] = item.Text;
                dtTemp.Rows.Add(drTemp);
            }
            return dtTemp;
        }