Denial of service (DoS) Attack TCP

I have an question... For a TCP DoS Attack all I need to do is a create a TcpClient , connect to respectively ip and just send a lot of messages? Or I need to send other stuff?

TcpClient client = new TcpClient();
client.Connect(IPAddress.Parse("ip_adress"),port);
NetworkStream stream = client.GetStream();
string text = "text";
byte [] message = Encoding.ASCII.GetBytes (text);
stream.Write (message , 0 , message.Length);
stream.Close();
client.Close();

Thank you in advance!