Prado\Collections\TPagedDataSource::getCount PHP Method

    public function getCount()
    {
        if ($this->_dataSource === null) {
            return 0;
        }
        if (!$this->_allowPaging) {
            return $this->getDataSourceCount();
        }
        if (!$this->_allowCustomPaging && $this->getIsLastPage()) {
            return $this->getDataSourceCount() - $this->getFirstIndexInPage();
        }
        return $this->_pageSize;
    }