Newtonsoft.Json序列化和反序列

这里下载:http://www.newtonsoft.com/products/json/
安装:
   1.解压下载文件,得到Newtonsoft.Json.dll
   2.在项目中添加引用..
 序列化和反序列在.net项目中:
 

Product product = new Product();

product.Name = "Apple";

product.Expiry = new DateTime(2008, 12, 28);

product.Price = 3.99M;

product.Sizes = new string[] { "Small", "Medium", "Large" };

string output = javascriptConvert.SerializeObject(product);

//{

//  "Name": "Apple",

//  "Expiry": new Date(1230422400000),

//  "Price": 3.99,

//  "Sizes": [

//    "Small",

//    "Medium",

//    "Large"

//  ]

//}

Product deserializedProduct = (Product)javascriptConvert.DeserializeObject(output, typeof(Product));

 
读取JSON

string jsonText = "['JSON!',1,true,{property:'value'}]";

JsonReader reader = new JsonReader(new StringReader(jsonText));

Console.WriteLine("TokenType\t\tValueType\t\tValue");

while (reader.Read())

{

    Console.WriteLine(reader.TokenType + "\t\t" + WriteValue(reader.ValueType) + "\t\t" + WriteValue(reader.Value))

}

结果显示:
TokenTypeValueTypeValueStartArraynullnullStringSystem.StringJSON!IntegerSystem.Int321BooleanSystem.BooleanTrueStartObjectnullnullPropertyNameSystem.StringpropertyStringSystem.StringvalueEndObjectnullnullEndArraynullnull

JSON写入

StringWriter sw = new StringWriter();

JsonWriter writer = new JsonWriter(sw);

writer.WriteStartArray();

writer.WriteValue("JSON!");

writer.WriteValue(1);

writer.WriteValue(true);

writer.WriteStartObject();

writer.WritePropertyName("property");

writer.WriteValue("value");

writer.WriteEndObject();

writer.WriteEndArray();

writer.Flush();

string jsonText = sw.GetStringBuilder().ToString();

Console.WriteLine(jsonText);

// ['JSON!',1,true,{property:'value'}]

这里会打印出: ['JSON!',1,true,{property:'value'}].

using System;using System.Collections.Generic;using System.Linq;using System.Web;using System.Web.UI;using System.Web.UI.WebControls;using Newtonsoft.Json;using System.IO;using Newtonsoft.Json.Linq;namespace WebApplication15{    public partial class WebForm4 : System.Web.UI.Page    {        protected void Page_Load(object sender, EventArgs e)        {            var jsonBuilder = new System.Text.StringBuilder();            using (var jsonWriter = new Newtonsoft.Json.JsonTextWriter(new System.IO.StringWriter(jsonBuilder)))            {                jsonWriter.WriteStartObject();                jsonWriter.WritePropertyName("status");                if (false)                {                    jsonWriter.WriteValue(false);                    jsonWriter.WritePropertyName("msg");                    jsonWriter.WriteValue("未知原因，请重试");                }                else                {                    jsonWriter.WriteValue(true);                    jsonWriter.WritePropertyName("yftest");                    jsonWriter.WriteStartArray();                    for (int i = 0; i < 10; i++)                    {                        jsonWriter.WriteStartObject();                        jsonWriter.WritePropertyName("id");                        jsonWriter.WriteValue(i);                        jsonWriter.WritePropertyName("name");                        jsonWriter.WriteValue("test");                        jsonWriter.WriteEndObject();                    }                    jsonWriter.WriteEndArray();                }                jsonWriter.WriteEndObject();                jsonWriter.Flush();            }            Response.Write(jsonBuilder);            //获取根status          //var jsonObject = Newtonsoft.Json.Linq.JObject.Parse(jsonBuilder.ToString());          //JToken ageToken = jsonObject["status"];          //Response.Write(ageToken.ToString());            //遍历深层参数            var jsonObject = Newtonsoft.Json.Linq.JObject.Parse(jsonBuilder.ToString());            var selectToken = jsonObject.SelectTokens("yftest", false);            //if (selectToken != null && selectToken is Newtonsoft.Json.Linq.JArray)            //{                foreach (var item in selectToken.Children())                {                 JToken ageToken = item["id"];                }            //}        }    }}