一,需去程序集添加using Newtonsoft.Json.Linq;引用
using System;using System.Collections.Generic;using System.Linq;using System.Web;using System.Web.UI;using System.Web.UI.WebControls;using System.Linq;using Newtonsoft.Json.Linq;using Newtonsoft.Json;using System.IO;using System.Net;public partial class _Default : System.Web.UI.Page{ protected void Page_Load(object sender, EventArgs e) { string str = "{'a':'aaa','b':'bbb','c':'ccc'}"; JObject jo = JObject.Parse(str); if (jo.Property("a") == null || jo.Property("3").ToString() == "") { Label1.Text = "键值key不存在！"; } IEnumerable properties = jo.Properties(); foreach (JProperty item in properties) { Label2.Text += item.Name + ":" + item.Value; } Label3.Text = jo.Value ("a"); }}
