SelectedIndices; $result=''; foreach($indices as $index) { $item=$input->Items[$index]; $result.="(Index: $index, Value: $item->Value, Text: $item->Text)"; } if($result==='') $output->Text='Your selection is empty.'; else $output->Text='Your selection is: '.$result; } public function selectionChanged($sender,$param) { $this->collectSelectionResult($this->CheckBoxList,$this->SelectionResult); } } ?>