Question

Any way to make this working code simpler ie the delegate { }?

 public partial class Form1 : Form
{
    private CodeDevice codeDevice;

    public Form1()
    {
        InitializeComponent();
        codeDevice = new CodeDevice();

        //subscribe to CodeDevice.ConnectionSuccessEvent and call Form1.SetupDeviceForConnectionSuccessSate when it fires
        codeDevice.ConnectionSuccessEvent += new EventHandler(SetupDeviceForConnectionSuccessState);
    }

    private void SetupDeviceForConnectionSuccessState(object sender, EventArgs args)
    {
        MessageBox.Show("It worked");
    }

    private void button1_Click(object sender, EventArgs e)
    {
        codeDevice.test();
    }
}

public class CodeDevice
{
    public event EventHandler ConnectionSuccessEvent = delegate { };

    public void ConnectionSuccess()
    {
        ConnectionSuccessEvent(this, new EventArgs());
    }

    public void test()
    {
        System.Threading.Thread.Sleep(1000);
        ConnectionSuccess();
    }
}

WinForm event subscription to another class

How to subscribe to other class' events in c#?

Answer 1

If don’t think you could simplyfy:

public event EventHandler ConnectionSuccessEvent = delegate { }

even in c#3 + you could only do

public event EventHandler ConnectionSuccessEvent = () => { }

However you could simplify

codeDevice.ConnectionSuccessEvent += new EventHandler(SetupDeviceForConnectionSuccessState);

to

codeDevice.ConnectionSuccessEvent += SetupDeviceForConnectionSuccessState;