private void UpdatedItems ()
{
_dataSource = new ComboBoxDataSource (this, Items);
m_helper.UsesDataSource = true;
m_helper.DataSource = _dataSource;
m_helper.ReloadData();
if (listbox_ctrl != null)
{
// listbox_ctrl.UpdateLastVisibleItem ();
// listbox_ctrl.CalcListBoxArea ();
// listbox_ctrl.Refresh ();
}
}