C＃WPF Web浏览器msHTML-探索DOM-查找元素 [英] C# WPF Webbrowser msHTML - Explore DOM - Find Elements

问题描述

我实际上正在使用WPF和WPF WebBrowser在C＃中处理个人项目。我真的需要像以前在javascript或php..etc中一样探索html DOM元素。

I'm actually working on a personal project in C# using WPF and WPF WebBrowser. I really need to explore html DOM Elements as we used to do in javascript or php..etc

在我的MainWindow中，我有这个变量：

In my MainWindow I have this variable :

private mshtml.HTMLDocument mainDocument = new mshtml.HTMLDocument();

在我的web浏览器LoadComplete回调中，我有这个：

In my webBrowser LoadComplete callback I have this :

mainDocument = (mshtml.HTMLDocument) mainBrowser.Document;

好，这很好，它正在工作。

Ok, so this is nice, it's working.

现在，如果我这样做：

mshtml.IHTMLElement elem = mainDocument.getElementById("MY_ID");

它也非常好，可以做elem.innerHTML或类似的东西。

it's also very nice, can do elem.innerHTML or somes stuff like that.

但是我的问题是只有HTMLDocument具有通过ID，标记名..etc来查找元素的方法

BUT my problem is only HTMLDocument have methodes to find elements by ID, by tagnames..etc

我不知道如何在IHTMLElement中查找元素。我尝试了一些类似将IHTMLElement强制转换为IHTMLElement2..etc的操作，但没有任何效果。

I don't know how to find elements in IHTMLElement. I tried some stuff like casting IHTMLElement to IHTMLElement2..etc but nothing have worked.

请问有什么想法。很多人谈论托管Winforms Webbrowser，但是我认为它必须只有使用mshtml才能做到这一点。

Please if you have any ideas. A lot of people talks about hosting winforms webbrowser but I think it must have a way to do that only with mshtml.

非常感谢，
如果需要的话更多信息，请随时问我

Thanks a lot, If you need more information, please feel free to ask me

ps：我是法国人，所以对我的英语水平感到很抱歉

ps : I'm french so I'm sorry about my Engish skills

推荐答案

如果要在Winforms或wpf中解析HTML文档，则可以使用出色的解析器htmlagility包。请参阅下面的链接
http://html-agility-pack.net

If you want to parse HTML document in Winforms or wpf, you can use an excellent parser htmlagility pack. Refer to below link http://html-agility-pack.net

  var url = "http://html-agility-pack.net/";
 var web = new HtmlWeb();
 var doc = web.Load(url);

将其加载到文档中后，您可以获取任何属性，标签等。

After loading it in doc, you can get any attribute, tag, etc.

 var value = doc.DocumentNode
.SelectNodes("//td/input")
.First()
.Attributes["value"].Value;

这非常简单，只需稍微研究一下文档即可充分利用它。

It's super easy, just explore the doc a bit and you can make full use of it.

您甚至可以从Web浏览器加载html敏捷包，如下所示

You can load html agility pack even from webbrowser, like below

HtmlAgilityPack.HtmlDocument doc = new 
HtmlAgilityPack.HtmlDocument();
            doc.Load(webBrowser1.DocumentStream);

或者您可以这样做

HtmlAgilityPack.HtmlDocument doc = new 
HtmlAgilityPack.HtmlDocument();
            doc.Load(webBrowser1.Document);

谢谢

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