list1->Items->clear(); for($i = 0,$k=count($data); $i<$k; $i++) { $item = new TListItem($data[$i], $i); $this->list1->Items[] = $item; } } public function populate_list2($sender, $param) { $data = array('Hello', 'World', 'Prado'); $this->list2->Items->clear(); for($i = 0,$k=count($data); $i<$k; $i++) { $item = new TListItem($data[$i], $i); $this->list2->Items[] = $item; } } public function list_changed($sender, $param) { $text = $sender->SelectedItem ? $sender->SelectedItem->Text : 'Not selected'; $this->label1->Text = $sender->ID . ': '.$text; } } ?>