Session session = null;

try
{
    // Setup session options
    SessionOptions sessionOptions = new SessionOptions
    {
        Protocol = Protocol.Ftp,
        HostName = HostName,
        UserName = UserName,
        Password = Password,
        Timeout = TimeSpan.FromDays(1),
    };

    using (session = new Session())
    {
        // Connect
        session.Open(sessionOptions);