Baidu image batch download tool based on C#

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 .Text;
using System.Threading;
using System.Threading.Tasks;
using System.Windows.Forms;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;

namespace Image Downloader{
Form1: Form {
                                                                                    use using using using using using         using using using using        out out through   out through off‐through off  ‐     ‐ ‐ ‐‐ ‐ InitializeComponent();                                                                                                                                               
         } 

                                                            using use using using using       using using       using using      through out through out using  ‐ off off ‐ private ‐ void ‐‐‐‐‐ private void butSelect_Click(object sender, EventArgs e) { ​  OK) {
                                                                                                         ;
                                                                                                                                                                                                                      + "pagen");
                                                                               private void butStart_Click( object sender , EventArgs e) {
            string key = textKeyWords.Text;
                                                            using     using   using   using     using using       using using     through out through out through out through off ’ s to using right through to ‐ ‐ ‐‐‐‐‐‐ long to be to be found. ");
              return; ;
                    return;
                                                                                                                                                                       process(key);
});                                                                                                                                                          ; for (int i = 0 ; i                                                                                                        HttpWebRequest req = (HttpWebRequest)WebRequest.Create("http://image.baidu.com/search/avatarjson?tn=resultjsonavatarnew&ie=utf-8&word=" + Uri.EscapeUriString(key) + "&cg=girl&pn=" + (i + 1) * 60 + "&rn=60&itg=0&z=0&fr=&width=&height=&lm=-1&ic=0&s=0&st=-1&gsm=360600003c");  
                using (HttpWebResponse res = (HttpWebResponse)req.GetResponse()) {  
                    if (res.StatusCode == HttpStatusCode.OK) {  
                        using (Stream stream = res.GetResponseStream()) {  
                            try {  
                                download(stream);  
                            } catch (Exception e) {  
                                textShow.BeginInvoke(new Action(() => {  
                                    textShow.AppendText(e.Message + Environment.NewLine);  
                                }));  
                            }  
                        }  
                    } else {  
                        MessageBox.Show("获取第" + i + "页失败！" + res.StatusCode);  
                    }  
                }  
            }  
        }  
   
        private void download(Stream stream) {  
            using (StreamReader reader = new StreamReader(stream)) {  
                string json = reader.ReadToEnd();  
                JObject objRoot = (JObject)JsonConvert.DeserializeObject(json);  
                JArray imgs = (JArray)objRoot["imgs"];  
                for (int j = 0 ; j                     JObject img = (JObject)imgs[j];  
                    string objUrl = (string)img["objURL"];//http://hibiadu....../1.jpg  
                    // textShow.AppendText(objUrl + Environment.NewLine);  
                    //保存的路径是：destDir；  
                    try {  
DownloadImage(objUrl);//Avoid the code in a method being too complex
                                                                                                                                                 textShow.BeginInvoke(new Action(() => {
                                      textShow.AppendText(ex.Message + Environment.NewLine);                                                                                                                                                                                                                                               (dir, Path.GetFileName(objUrl));
          HttpWebRequest req = (HttpWebRequest)WebRequest.Create(objUrl); Sent from Baidu Pictures using (HttpWebResponse res = (HttpWebResponse)req.GetResponse()) {
                                                                                                using (Stream stream = res.GetResponseStream())                          filestream = new FileStream(path, FileMode.Create)) {
                                                                                                                                                                      throw new Exception("Download failed" + res.StatusCode);
}