Question

I have a Windows Forms application at the moment, and I want to create a new thread and run a method on another class that accepts an input.

For example

public partial class Form1: Form {
    SerialPort serialInput;
    // I want to create a new thread that will pass the parameter serialInput into the method
    // SMSListener on another class and run the method contionously on the background.
}

class SMS
{
    public void SMSListener(SerialPort serial1)
    {
        serial1.DataReceived += port_DataRecieved;
    }

    private void port_DataRecieved(object sender, SerialDataReceivedEventArgs e)
    {
        // Other codes
    }
}

How do I perform this in C#? I have seen numerous examples on the web, and most of them run the method on the same class with no parameters, but none that suits my requirements.

Answer 1

I am not an expert on Multithreading but to the best of my knowledge you can only start threads on methods that accept an object parameter and return void. So in order to achieve that for your problem (don’t shoot me down if there is a better approach!) I would do something like

public partial class Form1: Form {
    SerialPort serialInput;
    // I want to create a new thread that will pass the parameter serialInput into the method
    // SMSListener on another class and run the method contionously on the background.
    SMS sms = new SMS();
    Thread t = new Thread(sms.SMSListenerUntyped);
    t.Start(serialInput);
}

class SMS
{
    public void SMSListenerUntyped(object serial1) {
        if (serial1 is SerialPort) //Check if the parameter is correctly typed.
             this.SMSListener(serial1 as SerialPort);
        else
           throw new ArgumentException();
    }

    public void SMSListener(SerialPort serial1)
    {
        serial1.DataReceived += port_DataRecieved;
    }

    private void port_DataRecieved(object sender, SerialDataReceivedEventArgs e)
    {
        // Other code.
    }