How to get innertext of particular tag from web page by using Class name

            string url = string.Empty;
            url = TextWeburl.Text;

            HtmlDocument htmlDoc = new HtmlDocument();
            htmlDoc.LoadHtml(url);
//            XPathNavigator docNav = htmlDoc.CreateNavigator();

//            XPathNavigator node = docNav.SelectSingleNode("//p");

            string name = htmlDoc.DocumentNode.SelectSingleNode("//p/span").Attributes["theGood"].Value;