serializar - Generics/JSON JavaScriptSerializer C#

recorrer json c#

Question

Estoy construyendo una aplicación winForms en NET3.5SP1 usando VS2008Express. Estoy tratando de deserializar un objeto utilizando la biblioteca System.Web.Script.Serialization.

El error es: Tipo ''jsonWinForm.Category'' no es compatible para la deserialización de una matriz.

¡Aclamaciones!

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<Category>(s);
                }
            }
        }
    }
}

Answer 1

Encontré mi error ... debería ser:

Aclamaciones

JavaScriptSerializer serializer = new JavaScriptSerializer();

// create a generic list of categories
List<Category> listOfCategories = new List<Category>();

// deserialize as a list of Categories, and put into listOfCategories
listOfCategories = serializer.Deserialize<List<Category>>(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";
}

Answer 2

Es genial que hayas encontrado tu error. Si está buscando otra herramienta para la serialización JSON, puede intentar con JSON.Net .