访问文件夹，访问服务批量修改图片名

按钮事件：

              button1.Enabled = false;
                //首先把图片的文件夹中的图片名用一个数组存放
                // string load = @"C:\Users\742357\Desktop\照片";
                string load = textBox1.Text;
                string[] fileName = System.IO.Directory.GetFiles(load, "*.JPG", System.IO.SearchOption.AllDirectories);
                int fileCount = fileName.Length;//图片的个数

                List<string> ID = new List<string>();

                //  string newload = @"C:\Users\742357\Desktop\整理后";
                string newload = textBox2.Text;
                FileInfo fi1 = new FileInfo(load);
                //fi1.CopyTo(newload);
                System.IO.Directory.CreateDirectory(newload);//创建新的文件夹

                    foreach (var item in System.IO.Directory.GetFiles(load, "*.JPG", System.IO.SearchOption.AllDirectories))
                    {


                        string fileOfName2 = Path.GetFileName(item);//得到每个图片的名称
                        //string[] id = fileOfName2.Split('.');
                        // string fileOfName = fileOfName2.Replace(".png", ".jpg");
                        //ID.Add(id[0]);
                       ID.Add(Path.GetFileNameWithoutExtension(item));

                     //   var file = Path.GetFileNameWithoutExtension(item);

                     //   string sql = @"select top 1 1 from t_empinfo where cardid=@id and usable=1";


                    }

                link.Linkwebservice lk = new link.Linkwebservice();
                DataTable dt = new DataTable("t");
                   
                 dt = lk.getInfo(ID.ToArray());
                 n = dt.Rows.Count;
                 progressBar1.Maximum = n;
                 label5.Text = "该目录下共发现" + n + "张.JPG后缀文件";
                 label5.Visible = true;

                 int i = 0;
                 foreach (var item in System.IO.Directory.GetFiles(load, "*.JPG", System.IO.SearchOption.AllDirectories))
                 {

                     DataRow[] drs = dt.Select("CardID='" + Path.GetFileNameWithoutExtension(item) + "'");
                     if(drs != null && drs.Length > 0){
                         //
                         string temp =  drs[0]["EmpName"].ToString()+"_"+drs[0]["EmpNum"].ToString();


                         File.Copy(load + @"\" + Path.GetFileName(item), newload + @"\" + temp+".JPG",true);
                         i++;
                         label3.Visible = false;
                         progressBar1.Visible = true;
                         progressBar1.Value++;

                     }


                    // var item1 = dt.AsEnumerable().Where(a => a["CardID"].ToString() == Path.GetFileName(item));

                     
                  //   string temp=item1[2]
                
                }

                 label5.Text = label5.Text + "，转换完成" + i + "张";

初始化：

 private void Init() {

            label5.Visible = false;
            progressBar1.Visible = false;
            label3.Visible = false;

        }

效果图：