c#处理Json数据的实例

　　网络中数据传输经常是xml或者json，现在做的一个项目之前调其他系统接口都是返回的xml格式，刚刚遇到一个返回json格式数据的接口，通过例子由易到难总结一下处理过程，希望能帮到和我一样开始不会的朋友。

首先记录几个网址

http://json.codeplex.com/

http://www.json.org/json-zh.html

http://www.soaspx.com/dotnet/csharp/csharp_20100713_5052.html

http://www.soaspx.com/dotnet/csharp/csharp_20100713_5052.html

在线JSON代码检验、检验、美化、格式化工具：        http://tools.jb51.net/code/json

JSON在线格式化工具：                                       http://tools.jb51.net/code/jsonformat

在线XML/JSON互相转换工具：                             http://tools.jb51.net/code/xmljson

json代码在线格式化/美化/压缩/编辑/转换工具：        http://tools.jb51.net/code/jsoncodeformat

在线json压缩/转义工具：                                     http://tools.jb51.net/code/json_yasuo_trans

C语言风格/HTML/CSS/json代码格式化美化工具：    http://tools.jb51.net/code/ccode_html_css_json

代码示例：参考3.0ActiveX控件代码

1.简单的JSON操作

JSON格式：
{"result":"0","res_info":"ok","queryorder_info":"info"}

构建对象：　　
public struct ToJsonMy
 {
    public string result { get; set; }  //属性的名字，必须与json格式字符串中的"key"值一样。
    public string res_info { get; set; }
    public string queryorder_info { get; set; }   
 }

转换过程：
public static void JsonMy()
{
    string json = Jsonstr("D:\json\jsonmy1.txt");         //Jsonstr函数读取json数据的文本txt          　　　　　　 
    JavaScriptSerializer js = new JavaScriptSerializer();   //实例化一个能够序列化数据的类
    ToJsonMy list = js.Deserialize<ToJsonMy>(json);         //将json数据转化为对象类型并赋值给list
    string result = list.result;      　　　　　　　
    string res_info = list.res_info;
    string queryorder_info = list.res_info;
}

2.C#处理包含对象的json数据

JSON数据：
{"result":"0","res_info":"ok","queryorder_info":{"order_num":"5","orderdetail":"ok"}}

构建对象：
public struct ToJsonMy2
{
    public string result { get; set; }  
    public string res_info { get; set; }
    public queryorder_info queryorder_info;
}
public struct queryorder_info
{
    public string order_num { get; set; }
    public string orderdetail { get; set; }
}

转换过程：
public static void JsonMy2()
{
    string json = Jsonstr("D:\json\jsonmy2.txt");
    JavaScriptSerializer js = new JavaScriptSerializer();   //实例化一个能够序列化数据的类
    ToJsonMy2 list = js.Deserialize<ToJsonMy2>(json);       //将json数据转化为对象类型并赋值给list
    string result = list.result;    
    string res_info = list.res_info;
    string order_num = list.queryorder_info.order_num;
    string orderdetail = list.queryorder_info.orderdetail;
}

3、C#处理包含对象、数组的json数据

{"result":"0","res_info":"ok","queryorder_info":
　　{"order_num":"5","orderdetail":
　　[
　　　　{"CFTUin":"769839263","CancelDeadline":"2013-09-12 23:00:00","CheckInDate":"2013-09-12 00:00:00","CheckOutDate":"2013-09-13 00:00:00","CityID":"0101","CurrencyCode":"RMB","HotelID":"00301105","HotelName":"乐家连锁（北京天坛南门店）（原速8酒店（北京天坛南门店）","ListID":"1000000005201308280002999652","PayAmt":"228","PayType":"0","RommsCnt":"1","SPTransID":"65202157","State":"4"},
　　　　{"CFTUin":"248486133","CancelDeadline":"2013-10-13 23:00:00","CheckInDate":"2013-10-13 00:00:00","CheckOutDate":"2013-10-18 00:00:00","CityID":"0201","CurrencyCode":"RMB","HotelID":"10201314","HotelName":"上海凯顿酒店","ListID":"1000000005201308280002999413","PayAmt":"1140","PayType":"0","RommsCnt":"1","SPTransID":"65197226","State":"4"}
　　]
　　}
}

构建对象
public struct ToJsonMy3
{
    public string result { get; set; } 
    public string res_info { get; set; }
    public queryorder_info queryorder_info;
}
public struct queryorder_info
{
    public string order_num { get; set; }
    public List<orderdetail> orderdetail;//数组处理       
};
public struct orderdetail
{
    public string CFTUin { get; set; }
    public string CancelDeadline { get; set; }
    public string CheckInDate { get; set; }
    public string CheckOutDate { get; set; }
    public string CityID { get; set; }
    public string CurrencyCode { get; set; }
    public string HotelID { get; set; }
    public string HotelName { get; set; }
    public string ListID { get; set; }
    public string PayAmt { get; set; }
    public string PayType { get; set; }
    public string RommsCnt { get; set; }
    public string SPTransID { get; set; }
    public string State { get; set; }
}

public static void JsonMy4()
{
    string json = Jsonstr("D:\json\jsonmy4.txt");
    JavaScriptSerializer js = new JavaScriptSerializer();   //实例化一个能够序列化数据的类
    ToJsonMy3 list = js.Deserialize<ToJsonMy3>(json);    //将json数据转化为对象类型并赋值给list
    string result = list.result;     
    string res_info = list.res_info;
    string order_num = list.queryorder_info.order_num;
    List<orderdetail> orderdetail = list.queryorder_info.orderdetail;
    string CFTUin = orderdetail[0].CFTUin;
    string HotelName = orderdetail[0].HotelName;
    string ListID = orderdetail[1].ListID;
    string State = orderdetail[2].State;
}