C # ftp upload and download

To test whether the code we wrote has the ftp upload/download function, we need to download a virtual FTP server, such as Serv-U. After configuring Serv-U, we can test the encoding.
Introduce namespace: using System. Net;

////// Download the object //////Path of the downloaded file///Name of the downloaded file///File name to download///
 Private int Download (string filePath, string SaveFileName, string parFileName) {FtpWebRequest reqFTP; FileStream outputStream = new FileStream (filePath + "\" + SaveFileName, FileMode. create); try {reqFTP = (FtpWebRequest) FtpWebRequest. create (new Uri ("ftp: //" + strFTPIP + "/" + strFtpDownPath + "/" + parFileName); reqFTP. method = WebRequestMethods. ftp. downloadFile; reqFTP. useBinary = true; reqFT P. credentials = new NetworkCredential (strFTPUser, strFTPPSW); FtpWebResponse response = (FtpWebResponse) reqFTP. getResponse (); Stream ftpStream = response. getResponseStream (); long cl = response. contentLength; int bufferSize = 2048; int readCount; byte [] buffer = new byte [bufferSize]; readCount = ftpStream. read (buffer, 0, bufferSize); while (readCount> 0) {outputStream. write (buffer, 0, readCount); ReadCount = ftpStream. Read (buffer, 0, bufferSize);} // After the download is successful, delete the files on the server. // FtpWebRequest request = (FtpWebRequest) WebRequest. create (new Uri ("ftp: //" + strFTPIP + "/" + strFtpPath + "/" + fileName); // request. method = WebRequestMethods. ftp. deleteFile; // FtpWebResponse responseD = (FtpWebResponse) request. getResponse (); ftpStream. close (); outputStream. close (); response. close (); return readCount;} catch (Exception ex) {outputStream. close (); // MessageBox. show (ex. message); LogAPI. writeLog (ex. message); return-1 ;}}////// Method to upload the specified file to the specified FTP Server //////File full name to be uploadedPrivate bool Upload (string filePath, string filename) {FileInfo fileInf = new FileInfo (filename); string uri = "ftp: // "+ strFTPIP +"/"+ filePath +"/"+ fileInf. name; FtpWebRequest reqFTP; // Create FtpWebRequest object from the Uri provided reqFTP = (FtpWebRequest) FtpWebRequest. create (new Uri ("ftp: //" + strFTPIP + "/" + filePath + "/" + fileInf. name); // Provide the WebPermission Credintials ReqFTP. credentials = new NetworkCredential (strFTPUser, strFTPPSW); // By default KeepAlive is true, where the control connection is not closed // after a command is executed. reqFTP. keepAlive = false; // Specify the command to be executed. reqFTP. method = WebRequestMethods. ftp. uploadFile; // Specify the data transfer type. reqFTP. useBinary = true; // configure y the server about the size of the uploade D file reqFTP. contentLength = fileInf. length; // The buffer size is set to 2kb int buffLength = 2048; byte [] buff = new byte [buffLength]; int contentLen; // Opens a file stream (System. IO. fileStream) to read the file to be uploaded using (FileStream fs = fileInf. openRead () {try {// Stream to which the file to be upload is written using (Stream strm = reqFTP. getRequestStream () {// Read from th E file stream 2kb at a time contentLen = fs. Read (buff, 0, buffLength); // Till Stream content ends while (contentLen! = 0) {// Write Content from the file stream to the FTP Upload Stream strm. write (buff, 0, contentLen); contentLen = fs. read (buff, 0, buffLength);} // Close the file stream and the Request Stream // strm. close (); // fs. close () ;}} catch (Exception ex) {// fs. close (); LogAPI. writeLog ("Error in getting the Upload! "+ Ex. Message); return false;} return true ;}