JSON解析练习、DataGradView显示图片

using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Net;
using System.Net.Http;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace JSON解析练习
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        public static HttpClient http = new HttpClient();
        private async void button1_Click(object sender, EventArgs e)
        {
            try
            {
                HttpResponseMessage httpResponseMessage = await http.GetAsync("http://192.168.107.20:3000/Shop");
                httpResponseMessage.EnsureSuccessStatusCode();
                string s = await httpResponseMessage.Content.ReadAsStringAsync();
                Sh sh = JsonConvert.DeserializeObject<Sh>(s);
                this.dataGridView1.DataSource = sh.data;
                for (int i = 0; i < sh.data.Count; i++)
                {
                    using (WebClient webClient = new WebClient()) 
                    {
                        byte[] bs = webClient.DownloadData(sh.data[i].topImg);
                        using (MemoryStream ms = new MemoryStream(bs)) 
                        {
                            Image im=Image.FromStream(ms);
                            this.dataGridView1.Rows[i].Cells[2].Value = im;
                        }
                    }
                }
            }
            catch (Exception rr)
            {
                throw rr;
            }
        }
    }
    public class Sh
    {
        public int code { get; set; }
        public string message { get; set; }
        public List<D1> data { get; set; }    
    }
    public class D1
    {
        public int productId {  get; set; }
        public string productName { get; set; }
        public string topImg {  get; set; }
        public bool isActivity {  get; set; }
        public bool isCard { get; set; }
        public bool isSeven { get; set; }
        public bool isRealDesc {  get; set; }
        public string spec {  get; set; }   
        public int price {  get; set; }
        public int count {  get; set; }
        public int amount {  get; set; }
    }
}
//productId: 1001,
//  // 商品名称
//  productName: "【64GB限时优惠100元】华为旗下荣耀Play4T手机新品大电池AI摄影",
  
//  // 是否参加电竞节
//  isActivity: true,
//  // 是否支持信用卡
//  isCard: true,
//  // 是否支持七天退货
//  isSeven: true,
//  // 是否如实描述
//  isRealDesc: true,
//  // 规格
//  spec: "网络类型：4G全网通<br>机身颜色：极光蓝<br>套餐类型：官方标配<br>存储容量：6+128GB",
//  // 单价
//  price: 1199.00,
//  // 购买的数量
//  count: 2,
//  // 金额
//  amount: 2398.00