static void Main(string[] args)        {            string json = "{\"name\": \"测试\",\"mobile\": \"15341234699\",\"city\": {\"province\": \"内蒙古自治区\",\"city\": \"呼和浩特市\",\"xian\": \"玉泉区\" },\"address\": \"255466\" }";            JObject jo = (JObject)JsonConvert.DeserializeObject(json.ToString());            foreach (var item in jo)            {                Console.WriteLine($"{item.Key}:{item.Value}");            }            Console.WriteLine("Hello World!");            Console.ReadKey();        }

　　

 

报红线自己记得添加相应的引用与nuget包