C# serial port reading

To read data from a serial port in C#, you can use the System.IO.Ports namespace, which provides the SerialPort class. Here's a simple example of how you can read data from a serial port in C#:

using System;
using System.IO.Ports;

class SerialPortReadout
{
    static void Main()
    {
        // Create a new SerialPort object
        SerialPort serialPort = new SerialPort();

        // Set the serial port settings (you need to adjust these based on your device)
        serialPort.PortName = "COM1";
        serialPort.BaudRate = 9600;
        serialPort.Parity = Parity.None;
        serialPort.DataBits = 8;
        serialPort.StopBits = StopBits.One;

        try
        {
            // Open the serial port
            serialPort.Open();

            // Subscribe to the DataReceived event to handle incoming data
            serialPort.DataReceived += SerialPort_DataReceived;

            Console.WriteLine("Press any key to exit.");
            Console.ReadKey();
        }
        catch (Exception ex)
        {
            Console.WriteLine($"Error: {ex.Message}");
        }
        finally
        {
            // Close the serial port when done
            if (serialPort.IsOpen)
            {
                serialPort.Close();
            }
        }
    }

    private static void SerialPort_DataReceived(object sender, SerialDataReceivedEventArgs e)
    {
        // This method will be called when data is received on the serial port

        SerialPort serialPort = (SerialPort)sender;

        // Read the available bytes from the serial port
        int bytesToRead = serialPort.BytesToRead;
        byte[] buffer = new byte[bytesToRead];
        serialPort.Read(buffer, 0, bytesToRead);

        // Convert the byte array to a string (you may need to adjust the encoding)
        string receivedData = System.Text.Encoding.ASCII.GetString(buffer);

        // Display the received data
        Console.WriteLine($"Received data: {receivedData}");
    }
}

Make sure to adjust the PortName, BaudRate, Parity, DataBits, and StopBits properties based on the settings of your serial device.

Thanks

@Dieter Kaiser 

check below link

SerialPort.Read Method (System.IO.Ports) | Microsoft Learn

Reading serial port in C# - CodeProject

For more details check the below links:
https://www.codeproject.com/Articles/678025/Serial-Comms-in-Csharp-for-Beginners
https://stackoverflow.com/questions/1243070/how-to-read-and-write-from-the-serial-port
https://codesamplez.com/programming/serial-port-communication-c-sharp

Hi go through this article

https://www.c-sharpcorner.com/UploadFile/eclipsed4utoo/communicating-with-serial-port-in-C-Sharp/