SessionOptions sessionOptions = new SessionOptions
{
    Protocol = Protocol.Sftp,
    HostName = "",
    UserName = "",
    Password = "",
    PortNumber = 2222,
    SshHostKeyFingerprint = ""
};
 
using (Session session = new Session())
{
    session.ReconnectTime = new TimeSpan(0, 0, 30);
    // Connect
    session.Open(sessionOptions);
 
    TransferOptions transferOptions = new TransferOptions();
    transferOptions.TransferMode = TransferMode.Binary;
 
    TransferEventArgs transferResult;
    transferResult =
        session.PutFileToDirectory(@"C:\Users\rohiniag\Desktop\DemoPDF2.pdf", @"\SFTFIIles\", false, transferOptions);
    Console.WriteLine(transferResult.Touch);
 
}