问在ASP MVC中如何将大文件上传到FTP服务器

EN

 byte[] fileBytes = null;

                //Read the FileName and convert it to Byte array.
                string filename = Path.GetFileName(FileUpload1.FileName);

                using (StreamReader fileStream = new StreamReader(FileUpload1.InputStream))
                {
                    fileBytes = Encoding.UTF8.GetBytes(fileStream.ReadToEnd());
                    fileStream.Close();
                }

                try
                {
                    //Create FTP Request.
                    FtpWebRequest request = (FtpWebRequest)WebRequest.Create(ftp + ftpFolder + "/" + fileName);
                    request.Method = WebRequestMethods.Ftp.UploadFile;

                    //Enter FTP Server credentials.
                    request.Credentials = new NetworkCredential(ftpUName, ftpPWord);
                    request.ContentLength = fileBytes.Length;
                    request.UsePassive = true;
                    request.UseBinary = true;
                    request.ServicePoint.ConnectionLimit = fileBytes.Length;
                    request.EnableSsl = false;

                    using (Stream requestStream = request.GetRequestStream())
                    {
                        requestStream.Write(fileBytes, 0, fileBytes.Length);
                        requestStream.Close();
                    }

                    FtpWebResponse response = (FtpWebResponse)request.GetResponse();

                    response.Close();
                }
                catch (WebException ex)
                {
                    throw new Exception((ex.Response as FtpWebResponse).StatusDescription);
                }