public ActionResult selecting_multiple_files(string myuploader)
            {
                  using (CuteWebUI.MvcUploader uploader = new CuteWebUI.MvcUploader(System.Web.HttpContext.Current))
                  {
                        uploader.UploadUrl = Response.ApplyAppPathModifier("~/UploadHandler.ashx");
                        //the data of the uploader will render as <input type='hidden' name='myuploader'> 
                        uploader.Name = "myuploader";
                        uploader.AllowedFileExtensions = "*.jpg,*.gif,*.png,*.bmp,*.zip,*.rar";
                        //allow select multiple files
                        uploader.MultipleFilesUpload = true;
                        //tell uploader attach a button
                        uploader.InsertButtonID = "uploadbutton";
                        //prepair html code for the view
                        ViewData["uploaderhtml"] = uploader.Render();
                        //if it's HTTP POST:
                        if (!string.IsNullOrEmpty(myuploader))
                        {
                              List<string> processedfiles = new List<string>();
                              //for multiple files , the value is string : guid/guid/guid 
                              foreach (string strguid in myuploader.Split('/'))
                              {
                                    Guid fileguid = new Guid(strguid);
                                    CuteWebUI.MvcUploadFile file = uploader.GetUploadedFile(fileguid);
                                    if (file != null)
                                    {
                                          //you should validate it here:
                                          //now the file is in temporary directory, you need move it to target location
                                          //file.MoveTo("~/myfolder/" + file.FileName);
                                          processedfiles.Add(file.FileName);
                                    }
                              }
                              if (processedfiles.Count > 0)
                              {
                                    ViewData["UploadedMessage"] = string.Join(",", processedfiles.ToArray()) + " have been processed.";
                              }
                        }
                  }
                  return View();
            }