Is there a main method in C# analogous to C's int main()?-CodePudding

I'm new to C sharp writing a program to read data from a serial port. I'm used to writing in C and admittedly do not have much experience with object oriented languages. I want a piece of code to run to open a serial port without having to be called, ie. it will run as if it's in the int main() in C. I have the code below to try to figure out my problem.

using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.IO.Ports;

namespace Nav_Monitor
{
    public partial class MainForm : Form
    {
        public MainForm()
        {
            InitializeComponent();
        }

        private void t_tick(object sender, EventArgs e)
        {
            textBox1.Text  = Environment.NewLine;
            textBox1.Text  = DateTime.Now.ToString("hh:mm:ss tt");
        }

        SerialPort serialPort;
        private void openSerialPort(object sender, EventArgs e)
        {
            serialPort = new SerialPort("COM1", 19200, Parity.None, 8, StopBits.One);
            serialPort.Handshake = Handshake.None;
        }

    }
}

if I move the code outside of the method openSerialPort then I get an error 'the name "serialPort" does not exist in the current context'.

        serialPort = new SerialPort("COM1", 19200, Parity.None, 8, StopBits.One);
        serialPort.Handshake = Handshake.None;

        private void openSerialPort(object sender, EventArgs e)
        {

        }

So do I need something analogous to main() in C to run code automatically? It doesn't seem like I should put code in my program.cs file which seems to be the analogous place. I'm lost!

CodePudding user response：

The most analogous method is in fact inside Program.cs. Main() is the entry point for C# applications. However, you might consider kicking off any background work after the page has loaded or in the constructor if the work is non-blocking and can be run in the background.

I see you're working in Windows Forms, where the Form.Load event may be a good place to open your serial port.