C# 打印webBrowser打开的页面

  this.webBrowser.Navigate(webBrowserUrl, tagerFrameName, postBuffer, heads);
 this.webBrowser.DocumentCompleted += new WebBrowserDocumentCompletedEventHandler(WebBrowser_DocumentCompleted);

 void WebBrowser_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
 {
         WebBrowser webBrowser = (WebBrowser)sender;
       //WebBrowserReadyState.Interactive 和WebBrowserReadyState.Complete 时都会触发DocumentCompleted
        if (webBrowser.ReadyState == WebBrowserReadyState.Complete)
         {
               //webBrowser1.DocumentText 获取的内容中文会乱码
               //获取文档编码
               Encoding encoding = Encoding.GetEncoding(webBrowser.Document.Encoding);
               StreamReader stream = new StreamReader(webBrowser.DocumentStream, encoding);
               File.WriteAllText(@"D:\mzwu.txt", stream.ReadToEnd(), Encoding.Unicode);
               MessageBox.Show(DateTime.Now.ToString() + ": 页面内容获取完成! ");
           }
  }