如何向ColorDialog添加ColorChanged事件？

using System;
using System.Drawing;
using System.Windows.Forms;

public class CustomColorDialog : ColorDialog
{
    public event EventHandler ColorChanged;

    protected override void OnColorChanged(EventArgs e)
    {
        base.OnColorChanged(e);
        ColorChanged?.Invoke(this, e);
    }
}

// 在需要使用ColorDialog的地方
public class MainForm : Form
{
    private CustomColorDialog colorDialog;

    public MainForm()
    {
        colorDialog = new CustomColorDialog();
        colorDialog.ColorChanged += ColorDialog_ColorChanged;
    }

    private void ColorDialog_ColorChanged(object sender, EventArgs e)
    {
        // 处理颜色改变事件
        Color selectedColor = colorDialog.Color;
        // 其他逻辑处理...
    }
}