cef浏览器页面中含有多个iframe注入js代码

获取浏览器页面含有的iframe个数，循环iframe当地址满足需要的条件是执行js代码注入

System.Collections.Generic.List<long> l = chrbro.GetBrowser().GetFrameIdentifiers();

            for (int i = 0; i < l.Count; i++)
            {
                ActiveFrame = chrbro.GetBrowser().GetFrame(l[i]);
                if (ActiveFrame.Url.StartsWith("https://baidu.com"))
                {
                    //向浏览器中注入js代码
                    ActiveFrame.ExecuteJavaScriptAsync("var tabs = document.getElementsByClassName('classname'); ", ActiveFrame.Url, 0);
                    Thread.Sleep(5000);
                    break;
                }
            }