//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(1, the_rar.Length - 7);  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;     } }

/// <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(0, 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") != -1)      {   file.Attributes = FileAttributes.Normal;      }      File.Delete(file.FullName);  }     }     catch (Exception)     {  throw;     } }