Json数据转成 C# asp.net数据（对象）和逆转换

1.需要引用的命名空间

using System.Web.Script.Serialization;
using System.Runtime.Serialization;
using System.Runtime.Serialization.Json;
using System.IO;
using System.Text;

2.Json数据转成 C# asp.net数据（对象）方法如下

MemoryStream stream = new MemoryStream();
DataContractJsonSerializer ser = new DataContractJsonSerializer(typeof(List<yourType>));////youType是与Json格式对应的C#类
StreamWriter wr = new StreamWriter(stream);
wr.Write(tabJson);  //tabJson是你需要转化的Json字符串
wr.Flush();
stream.Position = 0;
Object obj = ser.ReadObject(stream);
List<yourType> list = (List<yourType>)obj; //list即为转化成的c#对象集合，通过索引如list[0],list[1]等访问。
int length = list.Count();//length为list对象集合的对象个数

3.如上方法的json字符串必须为如下格式，就是数组

[
    {
        "ID": "1",
        "fieldName": "MANDT",
        "fieldDisc": "客户端",
        "fieldType": "String",
        "mainGuid": "7cc70e2e-dea7-495b-85ac-639a202b4c86",
        "subGuid": "b95a98f5-7b7d-4060-96c7-3088cbab1fe4"
    },
    {
        "ID": "2",
        "fieldName": "VKORG",
        "fieldDisc": "销售主体",
        "fieldType": "String",
        "mainGuid": "7cc70e2e-dea7-495b-85ac-639a202b4c86",
        "subGuid": "1ae34ef2-ac94-47c6-8589-59b41d5054ef"
    }
]

而对应的yourType的类型如下：

public class yourType
    {
        public int ID { get; set; }
        public string fieldName { get; set; }
        public string fieldDisc { get; set; }
        public string fieldType { get; set; }
        public string mainGuid { get; set; }
        public string subGuid { get; set; }
    }

4. C# asp.net数据（对象）转成Json数据

JavaScriptSerializer serializer = new JavaScriptSerializer();  
var jsonData = serializer.Serialize(list);