How to Upload and Download Files to/from FTP Servers using C#/.NET?

Uploading and Downloading Files to and from FTP Servers in C#/.NET

Uploading Files

To upload a file to an FTP server, you can use WebClient.UploadFile or FtpWebRequest. To use WebClient, simply provide the FTP URL and the local file path:

WebClient client = new WebClient();
client.Credentials = new NetworkCredential("username", "password");
client.UploadFile("ftp://ftp.example.com/remote/path/file.zip", @"C:\local\path\file.zip");

For more control, use FtpWebRequest:

FtpWebRequest request =
    (FtpWebRequest)WebRequest.Create("ftp://ftp.example.com/remote/path/file.zip");
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);
}

Downloading Files

To download a file from an FTP server, use WebClient.DownloadFile or FtpWebRequest. To use WebClient, provide the FTP URL and the local file path:

WebClient client = new WebClient();
client.Credentials = new NetworkCredential("username", "password");
client.DownloadFile("ftp://ftp.example.com/remote/path/file.zip", @"C:\local\path\file.zip");

For more control, use FtpWebRequest:

FtpWebRequest request =
    (FtpWebRequest)WebRequest.Create("ftp://ftp.example.com/remote/path/file.zip");
request.Credentials = new NetworkCredential("username", "password");
request.Method = WebRequestMethods.Ftp.DownloadFile;

using (Stream ftpStream = request.GetResponse().GetResponseStream())
using (Stream fileStream = File.Create(@"C:\local\path\file.zip"))
{
    ftpStream.CopyTo(fileStream);
}

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