C# FTP 文件处理

 /// <summary>
        /// 上传文件
        /// </summary>
        /// <param name="ftpUrl">ftp URL</param>
        /// <param name="fielName">文件名称</param>
        public static void FTPUpload(string ftpUrl, string fielName)
        {
            FileInfo Info = new FileInfo(fielName);
            string FielEasyName = Info.Name;
            Uri uri = new Uri(ftpUrl + FielEasyName);
            FtpWebRequest ftpReq = (FtpWebRequest)WebRequest.Create(uri);

            //身份验证
            ftpReq.Credentials = new NetworkCredential(username, userpwd);

            //设置文件大小
            ftpReq.ContentLength = Info.Length;
            ftpReq.Method = System.Net.WebRequestMethods.Ftp.UploadFile;//设置上传请求


            //指定文件传输的数据类型
            ftpReq.UseBinary = true;
            ftpReq.UsePassive = true;
            //   ftpReq.KeepAlive = true;
            //获取请求流
            Stream reqStream = ftpReq.GetRequestStream();

            //设置缓冲池
            byte[] arr = null;
            using (FileStream fs = new FileStream(fielName, FileMode.Open))
            {
                int PCount = 1;//设置指针开始
                while (PCount > 0)
                {
                    arr = new byte[1024];
                    PCount = fs.Read(arr, 0, arr.Length);
                    reqStream.Write(arr, 0, arr.Length);
                }
                reqStream.Close();
                fs.Close();
               
            }
        }