XmlDocument xd = new XmlDocument();            XmlReaderSettings settings = new XmlReaderSettings();            settings.IgnoreComments = true;//忽略注视12121            XmlReader xReader = XmlReader.Create(filepath, settings);            xd.Load(xReader);            XmlNode root = xd.DocumentElement;            XmlNodeList nodeList = root.ChildNodes;            XmlNodeList portrait_nodelist = root.SelectNodes("/picture/portrait");            string head = portrait_nodelist.Item(0).Attributes["originaldir"].Value;