是否有办法在webbrowser控件的iframe中获取网页的跨域？

Question

I've been searching around the way to at least know what domain the iframe (with cross-domain) in the web page has, using .NET WebBrowser control. 我一直在使用.NET WebBrowser控件进行搜索，以至少了解iframe（具有跨域）在网页中的域。

I'm using .NET 2.0 Visual Studio 2005 C# 我正在使用.NET 2.0 Visual Studio 2005 C＃

For instance in the webbrowser control, it has web page with iframe with different domain. 例如在webbrowser控件中，它具有带有iframe且具有不同域的网页。

I want to get the value "www.google.com" 我想获取值“ www.google.com”

http://localhost/index.html http：//localhost/index.html

<html>
  <head></head>
  <body>
    <iframe src="http://www.google.com/foobar"></iframe>  
  </body>
</html>

I tried to get domain and getting UnauthorizedAccessException due to Cross Domain Scripting according to MSDN. 根据MSDN，由于跨域脚本，我试图获取域并获取UnauthorizedAccessException 。

  HtmlWindowCollection frames = webBrowser1.Document.Window.Frames;
  if (frames.Count > 0)
  {
    for (int i = 0, j = frames.Count; i < j; i++)
    {                        
      //if the iframe in the page has different domain
      if (frames[i].Document.Domain != this.webBrowser1.Document.Domain)
      {
         MessageBox.Show("iframe has different domain");
      }
    }
  }

But looks like I can't even get access to the domain. 但是看起来我什至无法访问该域。

I've tried Url too frames[i].Url and still same exception. 我也尝试过网址frames[i].Url url frames[i].Url和仍然相同的异常。

Does this mean I can't really get any information from the Iframe other than it is an iframe? 这是否意味着除了iframe之外，我实际上无法从iframe获得任何信息？ Is there a way to detect if an iframe has different domain without throwing exception? 有没有一种方法可以检测iframe是否具有其他域而不会引发异常？

Answer 1

This is a security feature of browsers to stop people being scammed. 这是浏览器的安全功能，可阻止他人被骗。 Otherwise you could embed their favourite bank website in an iFrame and extract data from it. 否则，您可以将他们最喜欢的银行网站嵌入iFrame并从中提取数据。

是否有办法在webbrowser控件的iframe中获取网页的跨域？

问题描述

1 个解决方案

解决方案1
1 已采纳 2011-07-07 13:53:07

是否有办法在webbrowser控件的iframe中获取网页的跨域？

问题描述

1 个解决方案

解决方案1 1 已采纳 2011-07-07 13:53:07

解决方案1
1 已采纳 2011-07-07 13:53:07