public class JSONHelper

    {

        public static string Serialize<T>(T obj)//序列化为JSON

        {

            System.Runtime.Serialization.Json.DataContractJsonSerializer serializer = new System.Runtime.Serialization.Json.DataContractJsonSerializer(obj.GetType());

            MemoryStream ms = new MemoryStream();

            serializer.WriteObject(ms, obj);

            string retVal = Encoding.Default.GetString(ms.ToArray());

            return retVal;

        }

        public static T Deserialize<T>(string json)//反序列化为对象

        {

            T obj = Activator.CreateInstance<T>();

            MemoryStream ms = new MemoryStream(Encoding.Unicode.GetBytes(json));

            System.Runtime.Serialization.Json.DataContractJsonSerializer serializer = new System.Runtime.Serialization.Json.DataContractJsonSerializer(obj.GetType());

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

            ms.Close();

            return obj;

        }

        public static List<T> DeserializeToList<T>(string json)//反序列化成泛型

        {

            JavaScriptSerializer serializer = new JavaScriptSerializer();

            List<T> objs = serializer.Deserialize<List<T>>(json);

            return objs;

        }

    }
JavaScriptSerializer 需添加system.web.Extensions引用