小盒子的星空

1. 安裝Json.net套件

2. 加入命名空間

using Newtonsoft.Json;
using Newtonsoft.Json.Linq;

3. 透過 泛行處理常式 (ashx)，用 Json 範例如下：

  (a) 用DataTable產生 Json

DataTable dt = new DataTable();
//...略
//將DataTable轉成JSON字串
string str_json = JsonConvert.SerializeObject(dt, Formatting.Indented);
context.Response.ContentType = "text/plain";
context.Response.Write(str_json);

  (b) 用物件產生 JSON

public class result
{
    public string id { get; set; }
    public string name { get; set; }
}

//--- 略 ---

result rlt2 = new result() { id = "222", name = "FFF" };

string json = JsonConvert.SerializeObject(rlt2);
context.Response.ContentType = "text/plain";
context.Response.Write(json);

  (c) 用 List 產生 JSON

public class result
{
    public string id { get; set; }
    public string name { get; set; }
}

//--- 略 ---

List<result> lst = new List<result>();
lst.Add(new result() { id = "111", name = "AAA" });
lst.Add(new result() { id = "222", name = "FFF" });

string json = JsonConvert.SerializeObject(lst);
context.Response.ContentType = "text/plain";
context.Response.Write(json);