public static CargoListForm OpenReference(Form mdiParent, EPVDatabase database)
        {
            CargoListForm form = new CargoListForm(mdiParent, database);

            form.btnOK.Visible = true;
            return(form);
        }
        private void rboxCargo_CallReference(object sender, EventArgs e)
        {
            CargoListForm form = CargoListForm.OpenReference(FindForm().MdiParent, Database);

            form.ItemSelected += ((ReferenceBox)sender).SetItem;
            form.Show();
        }