C # ftp file upload class

// Call the ftpuploadfile ("192.168.1.60", "ZCY", "123", @ "C: \ 1.txt ");

# Region FTP upload file // <summary> // FTP upload file // </Summary> // <Param name = "ftpserverip"> FTP Server IP address </ param> /// <Param name = "ftpuserid"> FTP Logon account </param> /// <Param name = "ftppassword"> FTP logon password </param> // /<Param name = "FILENAME"> file name (absolute path) </param> Private Static void ftpuploadfile (string ftpserverip, string ftpuserid, string ftppassword, string filename) {// Upload File stream filestream uploadfilestream = NULL; // ft P stream ftpstream = NULL; try {// get the uploaded file var uploadfile = new fileinfo (filename); // create the ftpwebrequest object var ftprequest = (ftpwebrequest) ftpwebrequest. create (New uri ("ftp: //" + ftpserverip + "/" + uploadfile. name); // FTP login ftprequest. credentials = new networkcredential (ftpuserid, ftppassword); // The default value is true, and the connection will not be closed // ftprequest is executed after a command. keepalive = false; // FTP request execution method ftprequest. method = webrequest Methods. FTP. uploadfile; // specifies the data transmission type ftprequest. usebinary = true; // notifies the server of the file size ftprequest when uploading files. contentlength = uploadfile. length; // set the buffer size to 2 kb const int bufflength = 2048; var buff = new byte [bufflength]; // open a file stream and read the uploaded file uploadfilestream = uploadfile. openread (); // write the uploaded file to the stream ftpstream = ftprequest. getrequeststream (); // 2kb var contentlen = uploadfilestream of each file stream read. read (buff, 0, bufflength); // stream Content not ended while (contentlen! = 0) {// write content from file stream to upload stream ftpstream. write (buff, 0, contentlen); contentlen = uploadfilestream. read (buff, 0, bufflength) ;}} catch (exception ex) {console. writeline (ex. message);} finally {If (uploadfilestream! = NULL) {uploadfilestream. Close ();} If (ftpstream! = NULL) {ftpstream. Close () ;}}# endregion