从C#.NET中的代码隐藏调用Javascript函数

using System;
using System.Windows.Forms;

namespace WindowsFormsApp
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
            webBrowser1.DocumentCompleted += WebBrowser1_DocumentCompleted;
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            webBrowser1.Navigate("https://example.com");
        }

        private void WebBrowser1_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
        {
            if (e.Url.AbsolutePath != webBrowser1.Url.AbsolutePath)
                return;

            var script = "function myFunction(param) { return 'Hello ' + param; }";
            webBrowser1.Document.InvokeScript("eval", new object[] { script });

            var result = webBrowser1.Document.InvokeScript("myFunction", new object[] { "World" });
            MessageBox.Show(result.ToString());
        }
    }
}