How to write data to serialport in C#

namespace SerialData
{
    public partial class Form1 : Form
    {
        private const int V = 0;
        string nonc;
        string strNonc;
     
        public Form1()
        {
            InitializeComponent();
        }
        private void Form1_Load(object sender, EventArgs e)
        {
            SerialPort port = new SerialPort("COM3", 9600, Parity.Even, 8, StopBits.One);
            serialPort1.Open();

            if (serialPort1.IsOpen)
            {
                try
                {
                    byte[] arr1 = { 58, 23, 68, 68, 68, 0, 22, 167 };
                    serialPort1.Write(arr1, 0, arr1.Length);
 
                    Thread.Sleep(500);
                    byte[] arr2 = { 58, 23, 68, 68, 68, 0, 22, 167 };
                    serialPort1.Write(arr2, 0, arr2.Length);

                    byte[] arr3 = { 58, 23, 68, 68, 68, 0, 22, 167 };
                    serialPort1.Write(arr3, 0, arr3.Length);

                    byte[] arr4 = { 58, 23, 68, 68, 68, 0, 22, 167 };
                    serialPort1.Write(arr4, 0, arr4.Length);

                }

                catch (Exception ex)
                {
                    MessageBox.Show(ex.Message);
                }
            }
        }