string user = tbnome.Text;
            string pass = tbpass.Text;

            System.Security.Cryptography.SHA256Managed crypt = new System.Security.Cryptography.SHA256Managed();
            System.Text.StringBuilder hash = new System.Text.StringBuilder();

            byte[] password = crypt.ComputeHash(Encoding.UTF8.GetBytes(pass), 0, Encoding.UTF8.GetByteCount(pass));

            if (tbpass.Text.Count()>0 && tbnome.Text.Count()>0)
            {
                MessageBox.Show("Well Done");
/*
                //Enviar Username
                byte[] packetUser = protocolSI.Make(ProtocolSICmdType.USER_OPTION_1, user);
                Networkstream.Write(packetUser, 0, packetUser.Length);

                //Enviar Password
                byte[] packetPass = protocolSI.Make(ProtocolSICmdType.USER_OPTION_1, password);
                Networkstream.Write(packetPass, 0, packetPass.Length);
  */


            }
            else
            {
                MessageBox.Show("Credenciais Erradas");
            }