Generics / JSON JavaScriptSerializer C#

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Generics / JSON JavaScriptSerializer C#

我正在使用VS2008Express构建一个.NET3.5SP1的WinForms应用程序。尝试使用System.Web.Script.Serialization库反序列化对象。

错误信息是：\"jsonWinForm.Category\"类型不支持数组的反序列化。

干杯！

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Web;
using System.Net;
using System.IO;
using System.Web.Script.Serialization;
namespace jsonWinForm {
    public class Category
    {
        public int categoryid;
        public string name;
        public int serverimageid;
        public DateTime dateuploaded;
        public bool enabled;
    }
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        private void button1_Click(object sender, EventArgs e)
        {
            using (WebClient client = new WebClient())
            {
                //manipulate request headers (optional)
                client.Headers.Add("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; .NET CLR 1.0.3705;)");
                string targetUri = "http://www.davemateer.com/ig/genius/category.php";
                //execute request and read response as string to console
                using (StreamReader reader = new StreamReader(client.OpenRead(targetUri)))
                {
                    string s = reader.ReadToEnd();
                    textBox1.Text = s;
                    Category cat = new Category();
                    JavaScriptSerializer serializer = new JavaScriptSerializer();
                    // this fails with a 
                    //Type 'jsonWinForm.Category' is not supported for deserialization of an array.
                    serializer.Deserialize(s);
                }
            }
        }
    }
}

admin 更改状态以发布 2023年5月20日
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2 答案

0 Comments

很棒，你找到了你的错误。如果你正在寻找另一个 JSON 序列化工具，你可以尝试JSON.Net。

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我找到了我的错误...应该是:

干杯

JavaScriptSerializer serializer = new JavaScriptSerializer();
// create a generic list of categories
List listOfCategories = new List();
// deserialize as a list of Categories, and put into listOfCategories
listOfCategories = serializer.Deserialize>(s);
//iterate through list and display in text box
foreach (Category item in listOfCategories)
{
    textBox2.Text += item.categoryid.ToString() + "\r\n";
    textBox2.Text += item.name.ToString() + "\r\n";
    textBox2.Text += item.serverimageid.ToString() + "\r\n";
    textBox2.Text += item.dateuploaded.ToString() + "\r\n";
    textBox2.Text += item.enabled.ToString() + "\r\n";
}

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