//json序列化和反序列化 using System.Runtime.Serialization.Json;

     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();

         //替换Json的Date字符串

         string p = @"\\/Date\((\d+)\+\d+\)\\/";

         MatchEvaluator matchEvaluator = new MatchEvaluator(ConvertJsonDateToDateString);

         Regex reg = new Regex(p);

         jsonString = reg.Replace(jsonString,matchEvaluator);

         return jsonString;

     }

     //反序列化

     public static T JsonDeserialize<T>(string jsonString)

     {

         //将"yyyy-MM-dd HH:mm:ss"格式的字符串转为"\/Date(1294499956278+0800)\/"格式           string p = @"\d{4}-\d{2}-\d{2}\s\d{2}:\d{2}:\d{2}";

         string p = @"\d{4}-\d{2}-\d{2}\s\d{2}:\d{2}:\d{2}";

         MatchEvaluator matchEvaluator = new MatchEvaluator(ConvertDateStringToJsonDate);

         Regex reg = new Regex(p);

         jsonString = reg.Replace(jsonString, matchEvaluator);

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

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

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

         return obj;

     }

     /// <summary>

     /// /// 将Json序列化的时间由/Date(1294499956278+0800)转为字符串

     /// /// </summary>

     /// 

     private static string ConvertJsonDateToDateString(Match m)

     {

         string result = string.Empty;

         DateTime dt = new DateTime(,,);

         dt = dt.AddMilliseconds(long.Parse(m.Groups[].Value));

         dt = dt.ToLocalTime();

         result = dt.ToString("yyyy-MM-dd HH:mm:ss");

         return result;

     }

     /// <summary>

     ///

     /// 将时间字符串转为Json时间

     /// /// </summary>

     /// 

     private static string ConvertDateStringToJsonDate(Match m)

     {

         string result = string.Empty;

         DateTime dt = DateTime.Parse(m.Groups[].Value);

         dt = dt.ToUniversalTime();

         TimeSpan ts = dt - DateTime.Parse("1970-01-01");

         result = string.Format("\\/Date({0}+0800)\\/",ts.TotalMilliseconds);

         return result;

     }

     public class Person

     {

         public string Name { get; set; }

         public int Age { get; set; }

         public DateTime LastLoginTime { get; set; }

     }

         //序列化

         Person p = new Person();

         p.Name = "张三";

         p.Age = ;

         p.LastLoginTime = DateTime.Now;

         string jsonString = JsonSerializer<Person>(p);

         Response.Write(jsonString);

       //  反序列化

         string json = "{\"Age\":28,\"LastLoginTime\":\"2011-01-09 00:30:00\",\"Name\":\"张三\"}";

         Person p = JsonDeserialize<Person>(json);

         Response.Write("姓名：" + p.Name + "</br>");

         Response.Write("年龄：" + p.Age+"</br>");

         Response.Write("时间：" + p.LastLoginTime);

         List<Person>list=new List <Person>{

          new Person{Name="张三",Age=},

          new Person{Name="小白",Age=}

         };

         string jsonString = JsonSerializer<List< Person>>(list);

         Response.Write(jsonString);

         Dictionary<string,string>Dic=new Dictionary<string,string>();

         Dic.Add("Name", "");

         Dic.Add("Age","");

         string jsonString=JsonSerializer<Dictionary<string,string>>(Dic);

         Response.Write(jsonString);