[ClassInterface(ClassInterfaceType.AutoDual)]
    [ComVisible(true)]
    /// <summary>
    /// 網(wǎng)頁調(diào)用C#方法
    /// </summary>
    public class ScriptCallbackObject
    {
        public string UserName { get; set; } = "我是C#屬性";

        public void ShowMessage()
        {
            MessageBox.Show("網(wǎng)頁調(diào)用C#");
        }

        public void ShowMessageArg(string arg)
        {
            MessageBox.Show("【網(wǎng)頁調(diào)用C#】:" + arg);
        }

        public string GetData(string arg)
        {
            return "【網(wǎng)頁調(diào)用C#獲取數(shù)據(jù)】;" + arg;
        }

        [System.Runtime.CompilerServices.IndexerName("Items")]
        public string this[int index]
        {
            get { return m_dictionary[index]; }
            set { m_dictionary[index] = value; }
        }
        private Dictionary<int, string> m_dictionary = new Dictionary<int, string>();        
    }

function callCsharp2() {

var data2 = $("#txtArg").attr("value"); //大坑 值不會時(shí)刻變化
// alert(data2);
var data = $("#txtArg").val(); 

window.chrome.webview.hostObjects.webBrowserObj.ShowMessageArg(data);
//window.chrome.webview.postMessage(data);
};

async function callCsharp3() {
   var data = $("#txtArg").val();
   var result = await webBrowserObj.GetData(data);
    alert(result);
};

async function callCsharp4() { 

            const propValue = await webBrowserObj.UserName;
            console.log(propValue);
            alert(propValue);
};

        private void callJS_Click(object sender, RoutedEventArgs e)
        {
            webView.CoreWebView2.ExecuteScriptAsync("ShowMessage()");          
        }

        private void callJSArg_Click(object sender, RoutedEventArgs e)
        {
            webView.CoreWebView2.ExecuteScriptAsync($"ShowMessageArg('{txtArg.Text}')");
        }

        private async void callJSGetData_Click(object sender, RoutedEventArgs e)
        {
            var jsResult = await webView.CoreWebView2.ExecuteScriptAsync($"GetData('{txtArg.Text}')");
            if (!string.IsNullOrEmpty(jsResult))
            {
                MessageBox.Show(jsResult);
            }            
        }

 //2、C#調(diào)用網(wǎng)頁
        var jsVar = '123';
        function Hello() {
            alert('調(diào)用Js' + jsVar);
        };

        function ShowMessage() {
            alert('我是網(wǎng)頁');
        };
        function ShowMessageArg(arg) {
            alert('【我是網(wǎng)頁消息框】' + arg);
        };
        function GetData(arg) {
            return '【我是網(wǎng)頁返回給你】:' + arg;
        };