public function render(Varien_Object $row)
 {
     $rowFiles = $row->getFiles();
     if (empty($rowFiles)) {
         return Mage::helper('xtento_orderexport')->__('No files saved.');
     }
     $filenames = explode("|", $rowFiles);
     $baseFilenames = array();
     foreach ($filenames as $filename) {
         array_push($baseFilenames, basename($filename));
     }
     $baseFilenames = array_unique($baseFilenames);
     $rowText = "";
     foreach ($baseFilenames as $filename) {
         $rowText .= $filename . "<br>";
     }
     return $rowText;
 }