我需要从一个网页，它会显示在我的WPF应用程序的正确的CSS路径（以后使用它与HTMLAgilityPack和/或Fizzler）。

I need the correct css path from a webpage, which will be displayed in my WPF application(to use it later with HTMLAgilityPack and/or Fizzler).

如这个，复制CSS路径或XPath（萤火虫），应是最终目标。

Something like this, to "copy css-path" or xpath(FireBug), should be the final goal.

我也发现了一些有趣的帖子，如：

I also found some interesting post like:

stackoverflow stackoverflow stackoverflow 的 $ C $的CProject stackoverflow stackoverflow stackoverflow codeproject

它们都使用webBrowser.Document.GetElementFromPoint，webBrowser.GetElementFromPoint或PointToClient，但我找不到它的任何图书馆，甚至不是 msdn.microsoft（web浏览器类）

They all use "webBrowser.Document.GetElementFromPoint", "webBrowser.GetElementFromPoint" or "PointToClient", but I can not find it in any library and not even on msdn.microsoft(WebBrowser Class)

当我使用从Visual Studio 2010工具箱中的WebBrowserControl，以显示我的网页的方式。

By the way I use the "WebBrowserControl" from visual studio 2010 toolbox to display my webpage.

然后我发现在客户端的一些功能，但是这不能成为他们的意思的东西（的 JavaScript的）...

Then I found some function on the client-side, but this can not be the thing they meant(javascript)...

更新：12日止，下午8时15分

这其实是一个很好的post通过迪克：

    private void myBrowser_LoadCompleted(object sender, NavigationEventArgs e)
{
    dynamic doc = myBrowser.Document;
    dynamic htmlText = doc.documentElement.InnerHtml;
    string htmlstring = htmlText;
}

这工作，但这个站在没有关系，我的WPF元素。 我只得到了HTML，但没有相应的元素。 我可以搜索在该HTML文档的文本，但如果它出现一次以上，其不是唯一的了。

This works, but this stands in no relation to my WPF element. I get only the html but not the corresponding element. I could search for the text in that html doc, but if it appears more than once, its is not unique anymore.

更新时间：6月13日，上午07时15

根据本教程中，我发现了一个解决方法。

Based on this tutorial I found a workaround.

我列入这个命名空间在我的的.xaml：

I included this namespace in my ".xaml":

xmlns:wf="clr-namespace:System.Windows.Forms;assembly=System.Windows.Forms"

然后，我添加了旧的WinForms浏览器：

Then I added the the old winforms browser:

<WindowsFormsHost Name="wfhSample" Margin="372,12,12,205" MouseLeftButtonDown="wfhSample_MouseLeftButtonDown">
    <WindowsFormsHost.Child>
        <wf:WebBrowser />
    </WindowsFormsHost.Child>
</WindowsFormsHost>

添加到我的主窗口（）初始值：

Added to my "MainWindow()" a starting value:

MainWindow(){
 (wfhSample.Child as System.Windows.Forms.WebBrowser).Navigate("http://www.google.de/");
 }

实际的一部分，要让元素：

The actual part, to get the element:

 /*
    System.Drawing.Point point = System.Windows.Forms.Control.MousePosition;
    ...myMethod(..., (wfhSample.Child as System.Windows.Forms.WebBrowser), point.X, point.Y);
    */
     ...myMethod(...,System.Windows.Forms.WebBrowser refWebBrowser2,Int32 valScreenX, Int32 valScreenY,....){

    Point refPoint = refWebBrowser2.PointToClient(new Point(valScreenX, valScreenY));

    System.Windows.Forms.HtmlElement refHtmlElement = refWebBrowser2.Document.GetElementFromPoint(refPoint); //System.Drawing()

    return refHtmlElement.TagName;
    }

唯一的问题，这是现在剩下的就是该事件处理程序不火（我加了他们在属性窗口中）：

The only problem,which is left by now is that the event handler does not fire(I added them over the properties window):

//winforms-browser
                    private void wfhSample_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        {
            MessageBox.Show("old");

        }

        //wpf-browser
                private void browser_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        {
            MessageBox.Show("new");

        }

为什么我不能覆盖的事件处理程序（甚至不正确的按钮）？

Why can't I overwrite the event handler(not even the right button) ?

更新时间：6月13日，07:45

This可能是一个有用的文章中，我将检查了这一点。

This could be an useful article, I will check this out.

更新：16日止，上午07:00

现在我找到了一个解决方案，在那里我可以处理事件的WPF的网页浏览器，而不是旧的WinForms浏览器。

Now I found a solution, where I can handle an event for a wpf-webbrowser, but not for the old winforms-browser.

    //new WPF webbrowser  
      private void browser_LoadCompleted(object sender, NavigationEventArgs e)
            {
                mshtml.HTMLDocument doc;
                doc = (mshtml.HTMLDocument)browser.Document;
                mshtml.HTMLDocumentEvents2_Event iEvent;
                iEvent = (mshtml.HTMLDocumentEvents2_Event)doc;
                iEvent.onclick += new mshtml.HTMLDocumentEvents2_onclickEventHandler(NewClickEventHandler);
            }

             private bool NewClickEventHandler(mshtml.IHTMLEventObj e)
            {
            //the click event handler works, but I have no access to "GetElementFromPoint"
 // it does not exist
                        //Point refPoint = browser.PointToClient(new Point(valScreenX, valScreenY));
                //System.Windows.Forms.HtmlElement refHtmlElement = browser.Document.GetElementFromPoint(refPoint);
                //return refHtmlElement.TagName;
                //because the new wpf control does not support for example 'GetElementFromPoint()'
            // I need to get the html controls conntected to the wpf cursor
            }

This帮助了我，我在我的WPF应用程序改变了事件处理的WinForms网页浏览器为：

This helped me and I changed the event handling for Winforms webbrowser in my wpf application to:

//old Winforms webbrowser
        private void wfhSample_ChildChanged(object sender, System.Windows.Forms.Integration.ChildChangedEventArgs e)
        {
        //registering the event here, 
        //calling "OldClickEventHandler" does not work I get a "NullReferenceException" for "_docEvent"
         HTMLDocumentEvents2_Event _docEvent= (HTMLDocumentEvents2_Event)(wfhSample.Child as System.Windows.Forms.WebBrowser).Document.DomDocument;
            _docEvent.onclick += new HTMLDocumentEvents2_onclickEventHandler(OldClickEventHandler);
        }
                    private bool OldClickEventHandler(mshtml.IHTMLEventObj e)
            {
            }

目前我还没有得到我的，一方面我的WPF应用程序中选择我有一个事件旧的WebForms的浏览器，在那里我得到一个NullReferenceException异常有问题的网页浏览器元素（实际上它不应该是从我的角度来看空），并在另一方面也为我的新（WPF）WebBrowser控件我无法访问Ge​​tElementFromPoint（），因为它似乎不存在了WPF WebBrowser控件。

At the moment I still do not get the element from the webbrowser which I selected in my WPF-application on the one hand I have a problem with an event for the old webforms webbrowser, where I get a "NullReferenceException"(actually it should not be null from my point of view) and on the other hand for my new(wpf) webbrowser control I can not access "GetElementFromPoint()" because it does not seem to exist for the wpf webbrowser control.

更新：17日止，上午10:00

看来，那

(HTMLDocumentEvents2_Event)(wfhSample.Child as System.Windows.Forms.WebBrowser).Document.DomDocument;

这里面的wfhSample_ChildChanged还没有准备好，因为当我把相同的语句：

which is inside "wfhSample_ChildChanged" is not ready yet, because when I put the same statement:

(HTMLDocumentEvents2_Event)(wfhSample.Child as System.Windows.Forms.WebBrowser).Document.DomDocument;

成NewClickEventHandler（mshtml.IHTMLEventObj五）它在它需要的数据（，但这是错误的事件处理程序）。

into "NewClickEventHandler(mshtml.IHTMLEventObj e)" it has the required data in it(,but this is the wrong event handler).

所以，现在我需要找到正确的/合适的事件处理程序，我的老WPF浏览器。

So, now I need to find the correct/proper event handler for my old wpf browser.

更新：17日止，上午11:30

好了，现在我找到了一个解决方案，基于this文章中，我改变了我的code到：

Ok, now I found a solution based on this article, I changed my code to:

   private void wfhSample_Loaded(object sender, RoutedEventArgs e)
    {
        bool complete = false;
        (wfhSample.Child as System.Windows.Forms.WebBrowser).DocumentCompleted += delegate
        {
            if (complete)
                return;
            complete = true;
            // DocumentCompleted is fired before window.onload and body.onload
            (wfhSample.Child as System.Windows.Forms.WebBrowser).Document.Window.AttachEventHandler("onload", delegate
            {
                // Defer this to make sure all possible onload event handlers got fired
                System.Threading.SynchronizationContext.Current.Post(delegate
                {
                    // try webBrowser1.Document.GetElementById("id") here
                    //System.Windows.MessageBox.Show("window.onload was fired, can access DOM!");
                    var bla = (wfhSample.Child as System.Windows.Forms.WebBrowser).Document.DomDocument;
                    HTMLDocumentEvents2_Event _docEvent = (HTMLDocumentEvents2_Event)(wfhSample.Child as System.Windows.Forms.WebBrowser).Document.DomDocument;
                    _docEvent.onclick += new HTMLDocumentEvents2_onclickEventHandler(OldClickEventHandler);
                }, null);
            });
        };

        (wfhSample.Child as System.Windows.Forms.WebBrowser).Navigate("http://www.example.com");
    }
    private bool OldClickEventHandler(mshtml.IHTMLEventObj e)
    {
        System.Drawing.Point point = System.Windows.Forms.Control.MousePosition;
        System.Drawing.Point refPoint = (wfhSample.Child as System.Windows.Forms.WebBrowser).PointToClient(new System.Drawing.Point(point.X, point.Y));
        System.Windows.Forms.HtmlElement refHtmlElement = (wfhSample.Child as System.Windows.Forms.WebBrowser).Document.GetElementFromPoint(refPoint);
        var restult = refHtmlElement.TagName; //this is what I need for the first time,to continue
        return true;
    }

和事件处理的旧的控制工程：）

And the event handling for the old control works :)

但VAR restult = refHtmlElement.TagName;返回NullReferenceException异常，似乎有一些错误的坐标。

But the "var restult = refHtmlElement.TagName;" returns a "NullReferenceException", there seems to be something wrong with the coordinates.

只要我有一个解决方案，我将它张贴，或者如果你有一个想法，你可以很好的帮助：）

As soon as I have a solution I will post it or if you have an idea you can help as well:)

推荐答案

好吧，我发现包括WinForm的web浏览器到我的WPF应用程序（带有关，过程和资源来看看我的问题）的解决方案：

Ok,I found a solution including the winform webbrowser into my wpf application(take a look at my question regarding, processes and resources):

1，部分名为.xaml（空间）（更多详细信息）：

1.The .xaml part(namespace)(more details):

xmlns:wf="clr-namespace:System.Windows.Forms;assembly=System.Windows.Forms"

2，部分名为.xaml（web浏览器）（更多详细信息）：

2.The .xaml part(WebBrowser)(more details):

<WindowsFormsHost Name="wfhSample" Margin="372,12,12,205" Loaded="wfhSample_Loaded">
    <WindowsFormsHost.Child>
        <wf:WebBrowser />
    </WindowsFormsHost.Child>
</WindowsFormsHost>

3，$ C $隐藏文件C（more详细信息）：

3.The code behind file(more details):

   private void wfhSample_Loaded(object sender, RoutedEventArgs e)
    {
        bool complete = false;
        (wfhSample.Child as System.Windows.Forms.WebBrowser).DocumentCompleted += delegate
        {
            if (complete)
                return;
            complete = true;
            // DocumentCompleted is fired before window.onload and body.onload
            (wfhSample.Child as System.Windows.Forms.WebBrowser).Document.Window.AttachEventHandler("onload", delegate
            {
                // Defer this to make sure all possible onload event handlers got fired
                System.Threading.SynchronizationContext.Current.Post(delegate
                {
                    // try webBrowser1.Document.GetElementById("id") here
                    //System.Windows.MessageBox.Show("window.onload was fired, can access DOM!");
                    var bla = (wfhSample.Child as System.Windows.Forms.WebBrowser).Document.DomDocument;
                    HTMLDocumentEvents2_Event _docEvent = (HTMLDocumentEvents2_Event)(wfhSample.Child as System.Windows.Forms.WebBrowser).Document.DomDocument;
                    _docEvent.onclick += new HTMLDocumentEvents2_onclickEventHandler(OldClickEventHandler);
                }, null);
            });
        };

        (wfhSample.Child as System.Windows.Forms.WebBrowser).Navigate("http://www.example.com");
    }
    private bool OldClickEventHandler(mshtml.IHTMLEventObj e)
    {
        System.Drawing.Point point = System.Windows.Forms.Control.MousePosition;
        System.Drawing.Point refPoint = (wfhSample.Child as System.Windows.Forms.WebBrowser).PointToClient(new System.Drawing.Point(point.X, point.Y));
        System.Windows.Forms.HtmlElement refHtmlElement = (wfhSample.Child as System.Windows.Forms.WebBrowser).Document.GetElementFromPoint(refPoint);
        var restult = refHtmlElement.TagName; 
        return true;
    }

4.To得到充分的CSS路径或XPath你可以使用Fizzler，HTMLAgilityPack（this).

4.To get the full CSS-Path or XPath you could use Fizzler, HTMLAgilityPack(this).

有时候是有点越野车（调整窗口，更改标签），事件处理程序不火了。

Sometimes it is a little buggy(resizing window, changing tabs), the event handler does not fire anymore.