public function onPreRender($param)
{
parent::onPreRender($param);
$this->_repeatedControl->setAutoPostBack($this->getAutoPostBack());
$this->_repeatedControl->setCausesValidation($this->getCausesValidation());
$this->_repeatedControl->setValidationGroup($this->getValidationGroup());
$page = $this->getPage();
$n = $this->getItemCount();
for ($i = 0; $i < $n; ++$i) {
$this->_repeatedControl->setID("c{$i}");
$page->registerRequiresPostData($this->_repeatedControl);
}
}