c# bilen arkadaşlar!

class FTPIslemleri
{
    public static Task UploadFtpFile(string Server, string KlasorAdi, string DosyaAdi, string KullaniciAdi, string Sifre)
    {
        return Task.Run(() =>
        {
            FtpWebRequest request = null;
            try
            {
                string SadeDosyaAdi = Path.GetFileName(DosyaAdi);
                request = WebRequest.Create(new Uri($@"ftp://{Server}/{KlasorAdi}/{SadeDosyaAdi}")) as FtpWebRequest;
                request.Method = WebRequestMethods.Ftp.UploadFile;
                request.UseBinary = true;
                request.UsePassive = true;
                request.KeepAlive = true;
                request.Credentials = new NetworkCredential(KullaniciAdi, Sifre);
                request.ConnectionGroupName = "group";
 
                using (FileStream fs = File.OpenRead(DosyaAdi))
                {
                    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();
                }
            }
            catch (Exception ex)
            {
 
            }
        });
    }
}