/// <summary>

        /// 上传

        /// </summary>

        /// <param name="filename"></param>

        public void Upload(string filename)

        {



            FileInfo fileInf = new FileInfo(filename);

            string uri = ftpURI + fileInf.Name;

            FtpWebRequest reqFTP;



            reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri));

            reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);

            reqFTP.KeepAlive = false;

            reqFTP.Method = WebRequestMethods.Ftp.UploadFile;

            reqFTP.UseBinary = true;

            reqFTP.ContentLength = fileInf.Length;

            //记录文件总字节

            ftpUploadFizeSize = fileInf.Length;



            int buffLength = 2048;

            byte[] buff = new byte[buffLength];

            int contentLen;

            FileStream fs = fileInf.OpenRead();

            

            try

            {

                //把上传的文件写入流

                Stream strm = reqFTP.GetRequestStream();

                //每次读文件流的kb

                contentLen = fs.Read(buff, 0, buffLength);

                ftpUploadCurrLen += contentLen;

                //流内容没有结束

                while (contentLen != 0)

                {

                    //把内容从file stream写入upload stream

    &nb