返回单个字符串

        static void Main(string[] args)
        {
            string xmlStr = xmlStr = "<ArrayOfString xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"><string>fa141ca8-4ab7-48f0-8f39-d04b32b98273</string></ArrayOfString>";
            ArrayOfString obj = DeserialiZe<ArrayOfString>(xmlStr);
            Console.ReadKey();
        }
        /// <summary>
        /// xml反序列化
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="xml"></param>
        /// <returns></returns>
        public static T DeserialiZe<T>(string xml)
        {
            XmlSerializer xmlSerializer = new XmlSerializer(typeof(T));
            StringReader reader = new StringReader(xml);
            T result = (T)(xmlSerializer.Deserialize(reader));
            reader.Close();
            reader.Dispose();
            return result;
        }
    //新建类
    public class ArrayOfString
    {
        public string @string { get; set; }
    }

返回字符串数组

        public List<string> getXmlValue(string xml)
        {
            List<string> result = new List<string>();
            XDocument xdoc = XDocument.Parse(xml); //加载xml
            List<XElement> eles = new List<XElement>(); //获取符合条件的节点集合
            //遍历节点，把符合条件的添加到 eles集合
            foreach (XElement i in xdoc.Descendants().Where(e => {
                if (e.Name.LocalName == "string")
                {
                    return true;
                }
                return false;
            }))
            {
                eles.Add(i);
            }
            foreach (XElement item in eles) //遍历查到的数据，输出
            {
                result.Add(item.Value);
            }
            return result;
        }