WmAutoUpdate.TransferManager.downloadFile C# (CSharp) Method

        public bool downloadFile(String url, out Stream s, String path, TransferProgress del)
        {
            this.transferProgressDelegate = del;
              byte[] buffer = new byte[4096];
              FileStream fileStream = new FileStream(path, FileMode.Create, FileAccess.ReadWrite);

              WebRequest wr = WebRequest.Create(url);
              wr.Proxy = System.Net.GlobalProxySelection.Select;
              try
              {
            using (WebResponse response = wr.GetResponse())
            {
              using (Stream responseStream = response.GetResponseStream())
              {
            int count = 0;
            int dataRead = 0;
            do
            {
              count = responseStream.Read(buffer, 0, buffer.Length);
              fileStream.Write(buffer, 0, count);

              float progress = ((float)dataRead / (float)response.ContentLength) * 100.0f;
              OnProgress((int)progress);

              dataRead += count;
            } while (count != 0 && !abortTransfer);
              }
            }
              }
              catch (WebException wex)
              {
            Logger.Instance.log("No Connection to update server...");
            fileStream.Close();
            s = null;
            return false;
              }
              s = fileStream;
              //      fileStream.Close();
              return true;
        }

 public void CheckForNewVersion()
 {
     Stream s;
       TransferManager tm = new TransferManager();
       if (tm.downloadFile(URL, out s, updateFilePath, null))
       {
     s.Close();
     this.showUpdateDialog(s);
     this.cleanup();
       }
 }