WebBrowser DocumentCompleted事件多次触发

网页中的每个框架都会触发documentCompleted。困难的方法是计算框架，向您展示如何访问DOM：

private int mframeCount;private void startNavigate(string url) {  mframeCount = 0;  webBrowser1.Navigate(url);}private void documentCompleted(object sender, WebBrowserdocumentCompletedEventArgs e) {  mframeCount += 1;  bool done = true;  if (webBrowser1.document != null) {    HtmlWindow win = webBrowser1.document.Window;    if (win.frames.Count > mframeCount && win.frames.Count > 0) done = false;  }  if (done) {    Console.WriteLine("Now it is really done");  }}

简单的方法是检查完成加载的URL：

private void webBrowser1_documentCompleted(object sender, WebBrowserdocumentCompletedEventArgs e){    if (e.Url.Equals(webBrowser1.Url)) {        Console.WriteLine("Now it is really done");    }}