Prado\Web\UI\WebControls\TWebControl::onPreRender PHP Method

    public function onPreRender($param)
    {
        if ($decorator = $this->getDecorator(false)) {
            $decorator->instantiate();
        }
        parent::onPreRender($param);
    }

 /**
  * Ensures any pending databind is performed.
  * This method overrides the parent implementation.
  * @param TEventParameter event parameter
  */
 public function onPreRender($param)
 {
     $this->_prerendered = true;
     $this->ensureDataBound();
     parent::onPreRender($param);
 }