namespace ConsoleApplication1

{

    class Program

    {

        static void Main()

        {

            var data = "{\"C_Describe\":\"测试\",\"FY_Subtitle\":\"测试\",\"MAX_ZJ\":20000,\"HType\":\"WFB\",\"communityID\":\"28075\",
　　　　　　　　　　　　　　\"FY_id\":110352,\"areaID\":11,\"IsPublisher\":\"0\",\"attURL\":\"\"}";

            dynamic jsonData = FromJson<dynamic>(data);

            if (ContainChinese(jsonData.FY_Subtitle_CN))

                Console.WriteLine("");

            if (ContainChinese((dynamic)jsonData.FY_Subtitle))

                Console.WriteLine("");

            Console.ReadKey();

        }

        /// <summary>

        /// 判断是否包含中文

        /// </summary>

        /// <param name="CString"></param>

        /// <returns></returns>

        public static bool ContainChinese(string CString)

        {

            return Regex.IsMatch(CString??"", @"[\u4e00-\u9fbb]");

        }

        /// <summary>

        /// 将json字符串反序列化为dynamic类型

        /// </summary>

        /// <typeparam name="T"></typeparam>

        /// <param name="jsonText"></param>

        /// <returns></returns>

        public static T FromJson<T>(string jsonText)

        {

            var json = new JsonSerializer

            {

                NullValueHandling = NullValueHandling.Ignore,

               ObjectCreationHandling = ObjectCreationHandling.Replace,

                MissingMemberHandling = MissingMemberHandling.Ignore,

                ReferenceLoopHandling = ReferenceLoopHandling.Ignore

            };

            var sr = new StringReader(jsonText);

            var reader = new JsonTextReader(sr);

            var result = (T)json.Deserialize(reader, typeof(T));

            reader.Close();

            return result;

        }

    }

}

if (ContainChinese((jsonData.FY_Subtitle_CN ?? "").ToString()))

    Console.WriteLine("");

if (ContainChinese((jsonData.FY_Subtitle ?? "").ToString()))

    Console.WriteLine("");