[HttpGet]
        public IHttpActionResult XMLToJSON( )
        {
            var xml = @"<?xml version=""1.0"" encoding=""utf -8""?>" +
                "<ArrayOfString>" +
                "<string>广东 深圳</string><string>今日天气实况：气温：32℃；风向/风力：西南风 2级；湿度：66%</string> <string>紫外线强度：最弱。</string>" +
                "</ArrayOfString>";
		    //xml转json
            XmlDocument doc = new XmlDocument();
            doc.LoadXml(xml);
            string json = Newtonsoft.Json.JsonConvert.SerializeXmlNode(doc);
            //json转xml
            XmlDocument doc1 = Newtonsoft.Json.JsonConvert.DeserializeXmlNode(json);
            return Json<dynamic>(new { nFlag = json , doc1 = doc1.OuterXml });
        }