public void DownloadAgain()
        {
            var tempFolder = Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData);

            tempFolder = Path.Combine(tempFolder, "AltoDownloadAccelerator");
            dorg       = new HttpMultiThreadDownloader(dorg.Url, dorg.SaveDir, "", tempFolder, Properties.Settings.Default.NofThread)
            {
                DownloadRequestMessage = dorg.DownloadRequestMessage,
                Id = dorg.Id
            };
            setDownloaderEvents();
            dorg.Start();
            this.Activate();
        }