How do I upload a file to an SFTP serverfrom C# windows application

I recently had to upload files to my server using sftp as well. To my surprise, you can actually use the System.Net .net libraries to do this. System.net contains FtpWebRequest and FtpWebResponse classes which prove to be very helpful.

Uploading might look like this:

/* Upload File */
        public void upload(string remoteFile, string localFile, string host, string user, string pass)
        {
            try
            {
                /* Create an FTP Request */
                ftpRequest = (FtpWebRequest)FtpWebRequest.Create(host + "/" + remoteFile);
                /* Log in to the FTP Server with the User Name and Password Provided */
                ftpRequest.Credentials = new NetworkCredential(user, pass);
                /* When in doubt, use these options */
                ftpRequest.UseBinary = true;
                ftpRequest.UsePassive = true;
                ftpRequest.KeepAlive = true;
                /* Specify the Type of FTP Request */
                ftpRequest.Method = WebRequestMethods.Ftp.UploadFile;
                /* Establish Return Communication with the FTP Server */
                ftpStream = ftpRequest.GetRequestStream();
                /* Open a File Stream to Read the File for Upload */
                FileStream localFileStream = new FileStream(localFile, FileMode.Open);
                /* Buffer for the Downloaded Data */
                byte[] byteBuffer = new byte[bufferSize];
                int bytesSent = localFileStream.Read(byteBuffer, 0, bufferSize);
                /* Upload the File by Sending the Buffered Data Until the Transfer is Complete */
                try
                {
                    while (bytesSent != 0)
                    {
                        ftpStream.Write(byteBuffer, 0, bytesSent);
                        bytesSent = localFileStream.Read(byteBuffer, 0, bufferSize);
                    }
                }
                catch (Exception ex) { Console.WriteLine(ex.ToString()); }
                /* Resource Cleanup */
                localFileStream.Close();
                ftpStream.Close();
                ftpRequest = null;
            }
            catch (Exception ex) { Console.WriteLine(ex.ToString()); }
            return;
        }

and can be used like this:

upload("/public_html/testUpload.txt", @"C:\Users\1161074\Documents\testUpload.txt", @"ftp://xx.xxx.xxx.xx/", "username", "password");

I suggest making a little class out of this to have upload/download, etc. Thats what I did. Let me know if you would like it.