Hogy néz ki C#-ban egy smtp használata?

pl:

SmtpClient client = new SmtpClient("smtp.gmail.com", 587);

client.UseDefaultCredentials = false;

client.DeliveryMethod = SmtpDeliveryMethod.Network;

client.Credentials = new NetworkCredential("xxx@gmail.com", " pass");

client.EnableSsl = true;

MailMessage message = new MailMessage("xxx@gmail.com", "recipient@xxx.com", "targy", "szoveg");

message.Attachments.Add(new Attachment(new MemoryStream(binaryData), "filenev.dat"));

client.Send(message);