ASP.NET批量下载服务器端指定目录文件

             //遍历服务器指定文件夹下的所有文件
             string path = "uploads/Image/";
             string serverPath = Server.MapPath(path);

             //创建临时文件夹
             string tempName = DateTime.Now.ToString("yyyyMMddHHMMss");
             string tempFolder = Path.Combine(serverPath, tempName);
             Directory.CreateDirectory(tempFolder);

             DirectoryInfo folder = new DirectoryInfo(serverPath);
             foreach (FileInfo file in folder.GetFiles())
             {
                 string filename = file.Name;
                 File.Copy(serverPath + "/" + filename, tempFolder + "/" + filename);
             }
             //ZKHelper.JSHelper.Alert("图片拷贝成功!");
             //产生RAR文件，及文件输出
             RARSave(tempFolder, tempName);
             DownloadRAR(tempFolder + "\\" + tempName + ".rar");

         /// <summary>
         /// 生成RAR文件
         /// </summary>
         /// <param name="path">存放复制文件的目录</param>
         /// <param name="rarPatch">RAR文件存放目录</param>
         /// <param name="rarName">RAR文件名</param>
         private void RARSave(string rarPatch, string rarName)
         {
             string the_rar;
             RegistryKey the_Reg;
             Object the_Obj;
             string the_Info;
             ProcessStartInfo the_StartInfo;
             Process the_Process;
             try
             {
                 the_Reg = Registry.ClassesRoot.OpenSubKey(@"WinRAR");
                 the_Obj = the_Reg.GetValue("");
                 the_rar = the_Obj.ToString();
                 the_Reg.Close();
                 the_rar = the_rar.Substring(, the_rar.Length - );
                 the_Info = " a " + rarName + " -r";
                 the_StartInfo = new ProcessStartInfo();
                 the_StartInfo.FileName = "WinRar";//the_rar;
                 the_StartInfo.Arguments = the_Info;
                 the_StartInfo.WindowStyle = ProcessWindowStyle.Hidden;
                 //打包文件存放目录
                 the_StartInfo.WorkingDirectory = rarPatch;
                 the_Process = new Process();
                 the_Process.StartInfo = the_StartInfo;
                 the_Process.Start();
                 the_Process.WaitForExit();
                 the_Process.Close();
             }
             catch (Exception)
             {
                 throw;
             }
         }    

下载生成的RAR文件

         /// <summary>
         /// 下载生成的RAR文件
         /// </summary>
         private void DownloadRAR(string file)
         {
             FileInfo fileInfo = new FileInfo(file);
             Response.Clear();
             Response.ClearContent();
             Response.ClearHeaders();
             Response.AddHeader("Content-Disposition", "attachment;filename=" + fileInfo.Name);
             Response.AddHeader("Content-Length", fileInfo.Length.ToString());
             Response.AddHeader("Content-Transfer-Encoding", "binary");
             Response.ContentType = "application/octet-stream";
             Response.ContentEncoding = System.Text.Encoding.GetEncoding("gb2312");
             Response.WriteFile(fileInfo.FullName);
             Response.Flush();
             string tempPath = file.Substring(, file.LastIndexOf("\\"));
             //删除临时目录下的所有文件
             DeleteFiles(tempPath);
             //删除空目录
             Directory.Delete(tempPath);
             Response.End();
         }    

          /// <summary>
         /// 删除临时目录下的所有文件
         /// </summary>
         /// <param name="tempPath">临时目录路径</param>
         private void DeleteFiles(string tempPath)
         {
             DirectoryInfo directory = new DirectoryInfo(tempPath);
             try
             {
                 foreach (FileInfo file in directory.GetFiles())
                 {
                     if (file.Attributes.ToString().IndexOf("ReadOnly") != -)
                     {
                         file.Attributes = FileAttributes.Normal;
                     }
                     File.Delete(file.FullName);
                 }
             }
             catch (Exception)
             {
                 throw;
             }
         }