HtmlAgilityPack получить href - C#

<div class="group_bl_info">Добавила <a href="/ren_kira">Ki Roz</a> сегодня в 22:27</div>

HtmlAgilityPack.HtmlDocument doc = new HtmlAgilityPack.HtmlDocument();
                        doc.LoadHtml(group);
                        var dataBlock = doc.DocumentNode.SelectSingleNode("//div[@class='group_bl_info']");
                        string adm_banned = HttpUtility.HtmlDecode(dataBlock.InnerText);
                        MessageBox.Show(adm_banned);