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 .