var user = new Dictionary<string, object>
        {
            {"CompanyName","Epoint" },
            {"UserName","Ellis" },
            {"Address",new Dictionary<string,string>
                {
                    {"Country","China"},
                    {"Province","JiangSu"},
                    {"City","SuZhou" }
                }
            },
            {"PhoneNumber",new object[]
                {
                    new Dictionary<string,string>
                    {
                        {"Type","Phone" },
                        {"Number","0512-58972850" }
                    },
                    new Dictionary<string,string>
                    {
                        {"Type","Fax" },
                        {"Number","0512-58975860" }
                    }
                }
            }
        };

        //object 转 json
        string json = JsonConvert.SerializeObject(user);

        //json 转xml 
        string xml = JsonConvert.DeserializeXNode(json, "Root", true).ToString();

        //xml 转json
        XmlDocument doc = new XmlDocument();
        doc.LoadXml(xml);
        string jsontext = JsonConvert.SerializeXmlNode(doc);

        //json转object
        dynamic anotnerUser = JsonConvert.DeserializeObject<dynamic>(jsontext);
        string anotherJson = JsonConvert.SerializeObject(anotnerUser);