private long assign_train_from_dialog()
{
int i = m_list.SelectedItemCount;
if (i != 1)
{
return(-1);
}
long l = m_list.GetNextItem(-1, ListCtrl.NEXT.ALL, ListItemState.SELECTED);
if (l >= 0)
{
Globals.assign_train(assign_list[l], assign_tr);
}
EndModal(ShowModalResult.OK);
return(l);
}