测试可用:

private void SaveSnapshot_Click(object sender, EventArgs e)        {            this.webBrowser1.Navigate(txturl.Text);             this.webBrowser1.DocumentCompleted += new WebBrowserDocumentCompletedEventHandler(webBrowser_DocumentCompleted);  // 增加网页加载完成事件处理函数            this.webBrowser1.NewWindow += new CancelEventHandler(webBrowser_NewWindow);        }        void webBrowser_NewWindow(object sender, e) {            string url=((WebBrowser)sender).StatusText;            this.webBrowser1.Navigate(url);            e.Cancel = true;        }