Print using EPL2 in C#

I am trying to print to a Zebra Thermal Printer TLP 3742 in C Sharp. I am very unfamiliar with EPL2 Command Language. Here is what I have so far:

        SerialPort ComPort1 = new SerialPort("COM1", 9600, Parity.None, 8, StopBits.One);
        public void SendData()
        {
            try
            {
                using (ComPort1)
                {
                    // Open the port for communications
                    ComPort1.Open();
                    // Initialize Printer
                    InitSerialPrinter(ComPort1);
                    str = "50,50,0,4,1,1,N,\"50006854160000023B\"";
                    //ComPort1.Write(str);
                    // Close the port
                    ComPort1.Close();
                }
            }
            catch(Exception)
            {
                MessageBox.Show("No Serial");
            }
        }

        private void InitShippingPrinter(SerialPort m_pPortCom2)
        {
            SendCommandToPrinter(m_pPortCom2, "\nN");
            SendCommandToPrinter(m_pPortCom2, "D7");
            SendCommandToPrinter(m_pPortCom2, "S2");
            SendCommandToPrinter(m_pPortCom2, "ZT");
            SendCommandToPrinter(m_pPortCom2, "Q1800,36");
            SendCommandToPrinter(m_pPortCom2, "q1200");
        }

I have the manual but still unsure what to do. Could someone view this code and let me know what I'm doing wrong?