【C#】【FTP】從FTP下載圖片

  public void Download(string ftpPath, string filePath, string fileName)
        {
            filePath = "D:\\TestFTP\\";
            fileName = "test.jpg";
            ftpPath = "ftp://192.168.1.5/SAW1422.jpg";
            string sRet = "下載成功！";
            FtpWebRequest reqFTP;
            try
            {
                FileStream outputStream = new FileStream(filePath + fileName, FileMode.Create);

                // 根據uri創建FtpWebRequest對象   
                reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(ftpPath));

                // 指定執行什麼命令  
                reqFTP.Method = WebRequestMethods.Ftp.DownloadFile;

                // 指定數據傳輸類型  
                reqFTP.UseBinary = true;
                reqFTP.UsePassive = false;

                // ftp用戶名和密碼  
                //reqFTP.Credentials = new NetworkCredential();

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

                // 把下載的文件寫入流
                Stream ftpStream = response.GetResponseStream();

                long cl = response.ContentLength;

                // 緩衝大小設置爲2kb  
                int bufferSize = 2048;
                int readCount;
                byte[] buffer = new byte[bufferSize];

                // 每次讀文件流的2kb  
                readCount = ftpStream.Read(buffer, 0, bufferSize);
                while (readCount > 0)
                {
                    // 把內容從文件流寫入   
                    outputStream.Write(buffer, 0, readCount);
                    readCount = ftpStream.Read(buffer, 0, bufferSize);
                }

                //關閉兩個流和ftp連接
                ftpStream.Close();
                outputStream.Close();
                response.Close();


            }
            catch (Exception ex)
            {
                sRet = ex.Message;
            }
        }