How to: Upload files with FTP

This sample shows how to upload a file to an FTP server.

Note

This article is specific to projects that target .NET Framework. For projects that target .NET 6 and later versions, FTP is no longer supported.

Example

using System;
using System.IO;
using System.Net;
using System.Threading.Tasks;

namespace Examples.System.Net
{
    public class WebRequestGetExample
    {
        public static async Task 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.
            using (FileStream fileStream = File.Open("testfile.txt", FileMode.Open, FileAccess.Read))
            {
                using (Stream requestStream = request.GetRequestStream())
                {
                    await fileStream.CopyToAsync(requestStream);
                    using (FtpWebResponse response = (FtpWebResponse)request.GetResponse())
                    {
                        Console.WriteLine($"Upload File Complete, status {response.StatusDescription}");
                    }
                }
           }
        }
    }
}

Imports System.IO
Imports System.Net

Namespace Examples.System.Net
    Public Module WebRequestGetExample
        Public Sub Main()
            ' Get the object used to communicate with the server.
            Dim request As FtpWebRequest = CType(WebRequest.Create("ftp://www.contoso.com/test.htm"), FtpWebRequest)
            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.
            Using fileStream As FileStream = File.Open("testfile.txt", FileMode.Open, FileAccess.Read),
                  requestStream As Stream = request.GetRequestStream()
                fileStream.CopyTo(requestStream)
            End Using

            Using response As FtpWebResponse = CType(request.GetResponse(), FtpWebResponse)
                Console.WriteLine($"Upload File Complete, status {response.StatusDescription}")
            End Using
        End Sub
    End Module
End Namespace