Prado\Collections\TPagedDataSource::getDataSourceCount PHP Метод

    public function getDataSourceCount()
    {
        if ($this->_dataSource === null) {
            return 0;
        } else {
            if ($this->_allowCustomPaging) {
                return $this->_virtualCount;
            } else {
                return $this->_dataSource->getCount();
            }
        }
    }