WinForm使用CefSharp，嵌入浏览器

using CefSharp;
using CefSharp.WinForms;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace 大屏Win
{
    public partial class Form1 : Form
    {
        static string url = System.Configuration.ConfigurationManager.AppSettings["url"].ToString();//从配置文件中读取要打开的url
        static ChromiumWebBrowser chromeBrowser = null;
        public Form1()
        {
            InitializeComponent();
            try
            {
                CefSettings settings = new CefSettings();
                settings.Locale = "zh-CN";//中文环境
                settings.AcceptLanguageList = "zh-CN";//中文环境
                settings.CachePath = System.IO.Directory.GetCurrentDirectory()+"\\cache";//设置缓存
                Cef.Initialize(settings);
                chromeBrowser = new ChromiumWebBrowser(url);
                chromeBrowser.AddressChanged += Browser_AddressChanged;//监听地址变化
                this.Controls.Add(chromeBrowser);
                chromeBrowser.Dock = DockStyle.Fill;
                //js和cs交互
                chromeBrowser.JavascriptObjectRepository.Settings.LegacyBindingEnabled = true;
                chromeBrowser.JavascriptObjectRepository.Register("yfcsobj", new yfcsobj(), isAsync: true, options: BindingOptions.DefaultBinder);
                chromeBrowser.ExecuteScriptAsync("refreshdata()");//c# 调用 js方法
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
                Application.Exit();
            }
        }
        private void Browser_AddressChanged(object sender, AddressChangedEventArgs e)
        {
            //MessageBox.Show(e.Address);
        }
        private void Form1_FormClosing(object sender, FormClosingEventArgs e)
        {
            Cef.Shutdown();
        }
        //监听键盘按键
        private void Form1_KeyDown(object sender, KeyEventArgs e)
        {
            if (e.KeyData == Keys.F12)
            {
                chromeBrowser.ShowDevTools();//打开调试模式
            }
        }
    }
}

    public class yfcsobj
    {
        public void test(string msg)
        {
           MessageBox.Show(msg);
        }  
        public void closeApp()
        {
            //彻底关闭进程
            System.Environment.Exit(0);
            Application.Exit();
        }
    }

<html>
<body>
<button onclick="test()">test</button>
<button onclick="test2()">test2</button>
<script>
function test(){
  yfcsobj.test('test js');
}
function test2(){
  yfcsobj.closeApp();
}
</script>
</body>
<html>