js 调用 cefsharp 方法

 C# 代码

public partial class FormCef : Form
{
    public ChromiumWebBrowser chrom = new ChromiumWebBrowser();
    public FormCef()
        {
            InitializeComponent();

            if (!Cef.IsInitialized)
            {
                CefSettings settings = new CefSettings();

                //设置JS跨域；
                settings.MultiThreadedMessageLoop = true;
                settings.CefCommandLineArgs.Add("--disable-web-security", "");

                Cef.Initialize(settings, performDependencyCheck: false, browserProcessHandler: null);

            }
            CefSharpSettings.WcfEnabled = true;
            //老版本是：CefSharpSettings.LegacyJavascriptBindingEnabled = true;
            chrom.JavascriptObjectRepository.Settings.LegacyBindingEnabled = true;
            //注册方法
            chrom.JavascriptObjectRepository.Register("winformFun", new winformFun(), isAsync: false, options: BindingOptions.DefaultBinder);
            
        }
}

//测试方法
public class winformFun
    {
        public void showTest2()
        {
            MessageBox.Show("ShowTest2222");
        }

        public void showTest(string txt)
        {
            MessageBox.Show("this in C#.nr" + txt);
        }
    }

JS代码：