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I try upload a file to an FTP-server with C#. The file is uploaded but with zero bytes.
private void button2_Click(object sender, EventArgs e)
var dirPath = @"C:/Documents and Settings/sander.GD/Bureaublad/test/";
ftp ftpClient = new ftp("ftp://example.com/", "username", "password");
string[] files = Directory.GetFiles(dirPath,"*.*");
var uploadPath = "/httpdocs/album";
foreach (string file in files)
ftpClient.createDirectory("/test");
ftpClient.upload(uploadPath + "/" + Path.GetFileName(file), file);
if (string.IsNullOrEmpty(txtnaam.Text))
MessageBox.Show("Gelieve uw naam in te geven !");
The existing answers are valid, but why re-invent the wheel and bother with lower level WebRequest types while WebClient already implements FTP uploading neatly:
using (var client = new WebClient())
client.Credentials = new NetworkCredential(ftpUsername, ftpPassword);
client.UploadFile("ftp://host/path.zip", WebRequestMethods.Ftp.UploadFile, localFile);
Easiest way
The most trivial way to upload a file to an FTP server using .NET framework is using WebClient.UploadFile method:
WebClient client = new WebClient();
client.Credentials = new NetworkCredential("username", "password");
var url = "ftp://ftp.example.com/remote/path/file.zip";
client.UploadFile(url, @"C:\local\path\file.zip");
Advanced options
If you need a greater control, that WebClient does not offer (like TLS/SSL encryption, ascii/text transfer mode, active mode, transfer resuming, progress monitoring, etc), use FtpWebRequest. Easy way is to just copy a FileStream to an FTP stream using Stream.CopyTo:
var url = "ftp://ftp.example.com/remote/path/file.zip";
FtpWebRequest request = (FtpWebRequest)WebRequest.Create(url);
request.Credentials = new NetworkCredential("username", "password");
request.Method = WebRequestMethods.Ftp.UploadFile;
using (Stream fileStream = File.OpenRead(@"C:\local\path\file.zip"))
using (Stream ftpStream = request.GetRequestStream())
fileStream.CopyTo(ftpStream);
Progress monitoring
If you need to monitor an upload progress, you have to copy the contents by chunks yourself:
var url = "ftp://ftp.example.com/remote/path/file.zip";
FtpWebRequest request = (FtpWebRequest)WebRequest.Create(url);
request.Credentials = new NetworkCredential("username", "password");
request.Method = WebRequestMethods.Ftp.UploadFile;
using (Stream fileStream = File.OpenRead(@"C:\local\path\file.zip"))
using (Stream ftpStream = request.GetRequestStream())
byte[] buffer = new byte[10240];
int read;
while ((read = fileStream.Read(buffer, 0, buffer.Length)) > 0)
ftpStream.Write(buffer, 0, read);
Console.WriteLine("Uploaded {0} bytes", fileStream.Position);
For GUI progress (WinForms ProgressBar), see C# example at:
How can we show progress bar for upload with FtpWebRequest
Uploading folder
If you want to upload all files from a folder, see
Upload directory of files to FTP server using WebClient.
For a recursive upload, see
Recursive upload to FTP server in C#
.NET 5 Guide
async Task<FtpStatusCode> FtpFileUploadAsync(string ftpUrl, string userName, string password, string filePath)
FtpWebRequest request = (FtpWebRequest)WebRequest.Create(ftpUrl);
request.Method = WebRequestMethods.Ftp.UploadFile;
request.Credentials = new NetworkCredential(userName, password);
using (FileStream fileStream = new FileStream(filePath, FileMode.Open, FileAccess.Read))
using (Stream requestStream = request.GetRequestStream())
await fileStream.CopyToAsync(requestStream);
using (FtpWebResponse response = (FtpWebResponse)await request.GetResponseAsync())
return response.StatusCode;
.NET Framework
public void UploadFtpFile(string folderName, string fileName)
FtpWebRequest request;
string folderName;
string fileName;
string absoluteFileName = Path.GetFileName(fileName);
request = WebRequest.Create(new Uri(string.Format(@"ftp://{0}/{1}/{2}", "127.0.0.1", folderName, absoluteFileName))) as FtpWebRequest;
request.Method = WebRequestMethods.Ftp.UploadFile;
request.UseBinary = 1;
request.UsePassive = 1;
request.KeepAlive = 1;
request.Credentials = new NetworkCredential(user, pass);
request.ConnectionGroupName = "group";
using (FileStream fs = File.OpenRead(fileName))
byte[] buffer = new byte[fs.Length];
fs.Read(buffer, 0, buffer.Length);
fs.Close();
Stream requestStream = request.GetRequestStream();
requestStream.Write(buffer, 0, buffer.Length);
requestStream.Flush();
requestStream.Close();
How to use
UploadFtpFile("testFolder", "E:\\filesToUpload\\test.img");
use this in your foreach
and you only need to create folder one time
to create a folder
request = WebRequest.Create(new Uri(string.Format(@"ftp://{0}/{1}/", "127.0.0.1", "testFolder"))) as FtpWebRequest;
request.Method = WebRequestMethods.Ftp.MakeDirectory;
FtpWebResponse ftpResponse = (FtpWebResponse)request.GetResponse();
–
ByteArrayToFile(fileName, file);
var request = (FtpWebRequest) WebRequest.Create(new Uri(ServerUrl + fileName));
request.Method = WebRequestMethods.Ftp.UploadFile;
request.UsePassive = false;
request.Credentials = new NetworkCredential(UserName, Password);
request.ContentLength = file.Length;
var requestStream = request.GetRequestStream();
requestStream.Write(file, 0, file.Length);
requestStream.Close();
var response = (FtpWebResponse) request.GetResponse();
if (response != null)
response.Close();
You can't read send the file parameter in your code as it is only the filename.
Use the following:
byte[] bytes = File.ReadAllBytes(dir + file);
To get the file so you can pass it to the Send method.
–
public static void UploadFileToFtp(string url, string filePath, string username, string password)
var fileName = Path.GetFileName(filePath);
var request = (FtpWebRequest)WebRequest.Create(url + fileName);
request.Method = WebRequestMethods.Ftp.UploadFile;
request.Credentials = new NetworkCredential(username, password);
request.UsePassive = true;
request.UseBinary = true;
request.KeepAlive = false;
using (var fileStream = File.OpenRead(filePath))
using (var requestStream = request.GetRequestStream())
fileStream.CopyTo(requestStream);
requestStream.Close();
var response = (FtpWebResponse)request.GetResponse();
Console.WriteLine("Upload done: {0}", response.StatusDescription);
response.Close();
–
This works for me,this method will SFTP a file to a location within your network.
It uses SSH.NET.2013.4.7 library.One can just download it for free.
//Secure FTP
public void SecureFTPUploadFile(string destinationHost,int port,string username,string password,string source,string destination)
ConnectionInfo ConnNfo = new ConnectionInfo(destinationHost, port, username, new PasswordAuthenticationMethod(username, password));
var temp = destination.Split('/');
string destinationFileName = temp[temp.Count() - 1];
string parentDirectory = destination.Remove(destination.Length - (destinationFileName.Length + 1), destinationFileName.Length + 1);
using (var sshclient = new SshClient(ConnNfo))
sshclient.Connect();
using (var cmd = sshclient.CreateCommand("mkdir -p " + parentDirectory + " && chmod +rw " + parentDirectory))
cmd.Execute();
sshclient.Disconnect();
using (var sftp = new SftpClient(ConnNfo))
sftp.Connect();
sftp.ChangeDirectory(parentDirectory);
using (var uplfileStream = System.IO.File.OpenRead(source))
sftp.UploadFile(uplfileStream, destinationFileName, true);
sftp.Disconnect();
publish date: 06/26/2018
https://learn.microsoft.com/en-us/dotnet/framework/network-programming/how-to-upload-files-with-ftp
using System;
using System.IO;
using System.Net;
using System.Text;
namespace Examples.System.Net
public class WebRequestGetExample
public static void Main ()
// Get the object used to communicate with the server.
FtpWebRequest request =
(FtpWebRequest)WebRequest.Create("ftp://www.contoso.com/test.htm");
request.Method = WebRequestMethods.Ftp.UploadFile;
// This example assumes the FTP site uses anonymous logon.
request.Credentials = new NetworkCredential("anonymous",
"janeDoe@contoso.com");
// Copy the contents of the file to the request stream.
byte[] fileContents;
using (StreamReader sourceStream = new StreamReader("testfile.txt"))
fileContents = Encoding.UTF8.GetBytes(sourceStream.ReadToEnd());
request.ContentLength = fileContents.Length;
using (Stream requestStream = request.GetRequestStream())
requestStream.Write(fileContents, 0, fileContents.Length);
using (FtpWebResponse response = (FtpWebResponse)request.GetResponse())
Console.WriteLine($"Upload File Complete, status
{response.StatusDescription}");
Best way I've found is FluentFtp
You can find the repo here:
https://github.com/robinrodricks/FluentFTP
and the quickstart example here:
https://github.com/robinrodricks/FluentFTP/wiki/Quick-Start-Example.
And actually the WebRequest class recommended by a few people here, is not recommended by Microsoft anymore, check out this page:
https://learn.microsoft.com/en-us/dotnet/api/system.net.webrequest?view=net-5.0
// create an FTP client and specify the host, username and password
// (delete the credentials to use the "anonymous" account)
FtpClient client = new FtpClient("123.123.123.123", "david", "pass123");
// connect to the server and automatically detect working FTP settings
client.AutoConnect();
// upload a file and retry 3 times before giving up
client.RetryAttempts = 3;
client.UploadFile(@"C:\MyVideo.mp4", "/htdocs/big.txt",
FtpRemoteExists.Overwrite, false, FtpVerify.Retry);
// disconnect! good bye!
client.Disconnect();
I have prepared a method that works like this, you can replace the value of the variable ftpurl with the parameter TargetDestinationPath. I had tested this method on winforms application :
private void UploadProfileImage(string TargetFileName, string TargetDestinationPath, string FiletoUpload)
//Get the Image Destination path
string imageName = TargetFileName; //you can comment this
string imgPath = TargetDestinationPath;
string ftpurl = "ftp://downloads.abc.com/downloads.abc.com/MobileApps/SystemImages/ProfileImages/" + imgPath;
string ftpusername = krayknot_DAL.clsGlobal.FTPUsername;
string ftppassword = krayknot_DAL.clsGlobal.FTPPassword;
string fileurl = FiletoUpload;
FtpWebRequest ftpClient = (FtpWebRequest)FtpWebRequest.Create(ftpurl);
ftpClient.Credentials = new System.Net.NetworkCredential(ftpusername, ftppassword);
ftpClient.Method = System.Net.WebRequestMethods.Ftp.UploadFile;
ftpClient.UseBinary = true;
ftpClient.KeepAlive = true;
System.IO.FileInfo fi = new System.IO.FileInfo(fileurl);
ftpClient.ContentLength = fi.Length;
byte[] buffer = new byte[4097];
int bytes = 0;
int total_bytes = (int)fi.Length;
System.IO.FileStream fs = fi.OpenRead();
System.IO.Stream rs = ftpClient.GetRequestStream();
while (total_bytes > 0)
bytes = fs.Read(buffer, 0, buffer.Length);
rs.Write(buffer, 0, bytes);
total_bytes = total_bytes - bytes;
//fs.Flush();
fs.Close();
rs.Close();
FtpWebResponse uploadResponse = (FtpWebResponse)ftpClient.GetResponse();
string value = uploadResponse.StatusDescription;
uploadResponse.Close();
Let me know in case of any issue, or here is one more link that can help you:
https://msdn.microsoft.com/en-us/library/ms229715(v=vs.110).aspx
