public TestControlAppSimpleForm()
        {
            InitializeComponent();
            txtUrl.Text = "http://localhost:8000/jstest.html";
            //lvCefControl1.StartUrl = "http://localhost:8000/jstest.html";
            //lvCefControl1.StartUrl = "https://dictionary.cambridge.org/grammar/british-grammar/";
            LVCefClient lvcefclient = lvCefControl1.CefClient;

            if (lvCefControl1.CefClient != null)
            {
                lvcefclient.MessageRouterHandler.OnQueryEvent += (src, onquery) =>
                {
                    onquery.Handled = true;
                    onquery.callback.Success("huzzah");
                };
                lvcefclient.LifeSpanHandler.OnAfterCreatedEvent += (src, onafter) =>
                {
                    if (button2.InvokeRequired)
                    {
                        button2.Invoke((Action) delegate { button2.Enabled = true; });
                    }
                    else
                    {
                        button2.Enabled = true;
                    }
                };
                lvcefclient.RequestHandler.OnGetResourceHandlerEvent += (src, onget) =>
                {
                    if (onget.request.Url.Contains("stop"))
                    {
                        onget.DelegateRequest = true;
                    }
                };
                lvcefclient.RequestHandler.OnProcessRequestEvent += (src, onprocess) =>
                {
                    onprocess.continueRequest = false;
                };

                lvcefclient.LoadHandler.LoadStart += (se, ev) =>
                {
                    lvCefControl1.ExecuteJavaScript("console.log('LoadStart: " + ev.Url + "');");
                };
                lvcefclient.LoadHandler.LoadEnd += (se, ev) =>
                {
                    lvCefControl1.ExecuteJavaScript("console.log('LoadEnd: " + ev.Url + "');");
                };

                lvCefControl1.createBrowser();
            }
        }
        private void button1_Click(object sender, EventArgs e)
        {
            lvCefControl1.StartUrl = "http://localhost:8000/jstest.html";
            LVCefClient lvcefclient = lvCefControl1.CefClient;

            if (lvCefControl1.CefClient != null)
            {
                lvcefclient.MessageRouterHandler.OnQueryEvent += (src, onquery) =>
                {
                    onquery.Handled = true;
                    onquery.callback.Success("huzzah");
                };
                lvcefclient.LifeSpanHandler.OnAfterCreatedEvent += (src, onafter) =>
                {
                    if (button2.InvokeRequired)
                    {
                        button2.Invoke((Action) delegate { button2.Enabled = true; });
                    }
                    else
                    {
                        button2.Enabled = true;
                    }
                };
                lvcefclient.RequestHandler.OnGetResourceHandlerEvent += (src, onget) =>
                {
                    if (onget.request.Url.Contains("stop"))
                    {
                        onget.DelegateRequest = true;
                    }
                };
                lvcefclient.RequestHandler.OnProcessRequestEvent += (src, onprocess) =>
                {
                    onprocess.continueRequest = false;
                };

                lvCefControl1.createBrowser();
            }
        }