how to call received data in Serial Port C#

Question

i'm newbie in C# serial port...

i have a virtual serial port driver and try this code...

 private string strPortData = null;

    private void okButton_Click(object sender, EventArgs e)
    {
                if (!serialPort1.IsOpen)
                {
                    serialPort1.Open();
                }

                string strPortData= "CMD1";

                serialPort1.WriteLine(strPortData);

    }

    private void serialPort1_DataReceived(object sender, SerialDataReceivedEventArgs e)
    {
        textBox1.Text = serialPort1.ReadLine();
    }

but do not serialPort1_DataReceived ever call.

What should i do for call DataReceived?

Answer 1

Try creating a new console application with code similar to the following

void Main()
{
    using (SerialPort serialPort1 = new SerialPort("COM1"))
    using (SerialPort serialPort2 = new SerialPort("COM2"))
    {
        serialPort1.DataReceived += (sender, args) => {
            Console.WriteLine("COM1 Received: " + serialPort1.ReadLine());
        };

        serialPort2.DataReceived += (sender, args) => {
            Console.WriteLine("COM2 Received: " + serialPort2.ReadLine());
        };

        serialPort1.Open();
        serialPort2.Open();

        serialPort1.WriteLine("Hello, COM2!");

        Thread.Sleep(200);
    }
}

The above code opens both serial ports, sets up the data received events, and sends data through it. If you run that code you should see "COM2 Received: Hello, COM2!" output.