注意事项：使用JSON系列化和反系列化，必须要添加引用System.Runtime.Serialization。

    1.通用类代码如下：

    /// <summary>

    /// JSON序列化和反序列化辅助类

    /// </summary>

    public class JsonHelper

    {

        /// <summary>

        /// JSON序列化

        /// </summary>

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

        /// <param name="t"></param>

        /// <returns></returns>

        public static string JsonSerializer<T>(T t)

        {

            DataContractJsonSerializer ser = new DataContractJsonSerializer(typeof(T));

            MemoryStream ms = new MemoryStream();

            ser.WriteObject(ms, t);

            string jsonString = Encoding.UTF8.GetString(ms.ToArray());

            ms.Close();

            return jsonString;

        }

        /// <summary>

        /// JSON反序列化

        /// </summary>

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

        /// <param name="jsonString"></param>

        /// <returns></returns>

        public static T JsonDeserialize<T>(string jsonString)

        {

            DataContractJsonSerializer ser = new DataContractJsonSerializer(typeof(T));

            MemoryStream ms = new MemoryStream(Encoding.UTF8.GetBytes(jsonString));

            T obj = (T)ser.ReadObject(ms);

            ms.Close();

            return obj;

        }

    }

     2.定义调用类，如下：

    /// <summary>

    /// 定义类

    /// </summary>

    public class Person

    {

        public string Name { get; set; }

        public int Age { get; set; }

    }

 

    3.调用系列化和反系列化的操作如下：

            Person p = new Person();

            p.Name = "陈磊";

            p.Age = 29;

            //调用JSON系列化

            string strJson = JsonHelper.JsonSerializer<Person>(p);

            Console.WriteLine(strJson);

           //调用JSON反系列化

            string strDJson = "{\"Age\":28,\"Name\":\"陈磊\"}";

            Person dp = JsonHelper.JsonDeserialize<Person>(strDJson);

            Console.WriteLine(dp.Name + "," + dp.Age);