c#获取XML节点值

/// <summary>
        /// 解析XML获取XML节点值
        /// </summary>
        /// <param name="xmlStr">XML字符串</param>
        /// <returns></returns>
        public static List<Dictionary<string, string>> AnalyticalXML(string xmlStr) 
        {
            List<Dictionary<string, string>> list = new List<Dictionary<string,string>>();
            XmlDocument xmlDocument = new XmlDocument();
            xmlDocument.LoadXml(xmlStr);  //要解析的string类型的XML
            XmlNode node = xmlDocument.SelectSingleNode("TX/TX_INFO"); //要获取值的节点的父节点
            int successCount =Convert.ToInt32(node["SUCCESS_NUM"].InnerText);  //要获取的节点
            int errorCount = Convert.ToInt32(node["ERROR_NUM"].InnerText);  //要获取的节点 //我的值是int型的 ， string的就用string接收