WebView2 控件（基于 Microsoft Edge (Chromium) 的嵌入式浏览器控件），获取网页加载后的标题

private async void Form1_Load(object sender, EventArgs e)
{
    //绑定导航完成事件
    webView.NavigationCompleted += WebView_NavigationCompleted;
}
/// <summary>
/// 导航已完成事件
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private async void WebView_NavigationCompleted(object sender, CoreWebView2NavigationCompletedEventArgs e)
{
    if (e.IsSuccess)
    {
        string title = await webView.CoreWebView2.ExecuteScriptAsync("document.title");
        MessageBox.Show($"document.title属性: {title}");
    }
}