asp.net json 与xml 的基础事例

 //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}sd{2}:d{2}:d{2}";
        string p = @"d{4}-d{2}-d{2}sd{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(1970,1,1);    
        dt = dt.AddMilliseconds(long.Parse(m.Groups[1].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[0].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 = 28;
        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=24},
         new Person{Name="小白",Age=5}
        };

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

        Dictionary<string,string>Dic=new Dictionary<string,string>();
        Dic.Add("Name", "24");
        Dic.Add("Age","28");
        string jsonString=JsonSerializer<Dictionary<string,string>>(Dic);
        Response.Write(jsonString);