How can I get an HtmlElementCollection from a WPF WebBrowser

Question

My old WinForm application used HtmlElementCollection to process a page

HtmlElementCollection hec = this.webbrowser.Document.GetElementsByTagName("input");

In WPF WebBrowser, there are several things that are different. For example

this.webbrowser.Document does not have any method called GetElementsByTagName

Therefore my code is unable to get an HtmlElementCollection

dkozl · Accepted Answer · 2015-04-30T16:53:21.783

6

You need to add reference to Microsoft.mshtml and then you need to cast document as mshtml.HTMLDocument. After you do that you should be able to use getElementsByTagName() method

 var document = webBrowser.Document as mshtml.HTMLDocument;
 var inputs = document.getElementsByTagName("input");
 foreach (mshtml.IHTMLElement element in inputs)
 {

 }

getElementsByTagName() returns mshtml.IHTMLElementCollection and each item is of a mshtml.IHTMLElement type

EDIT

Alternative solution, if you need to use WinForms WebBrowser you can use that instead of the WPF one. Add reference to WindowsFormsIntegration and System.Windows.Forms, create namespace in XAML and use different browser control

<Window ...
    xmlns:winforms="clr-namespace:System.Windows.Forms;assembly=System.Windows.Forms">
    <WindowsFormsHost>
        <winforms:WebBrowser x:Name="webBrowser"/>
    </WindowsFormsHost>
</Window>

edited Apr 30 '15 at 16:53

answered Apr 30 '15 at 16:23

dkozl

32,814
8
87
89

I have methods which accept HtmlElementCollection as a parameter. Will this IHTMLElement be the same as HTMLElement? – software is fun Apr 30 '15 at 16:40
No, it won't. It's different type – dkozl Apr 30 '15 at 16:42
so can I just swap HtmlElementCollection with IHtmlElementCollection and everything should just work? – software is fun Apr 30 '15 at 16:53
@softwareisfun check my update. Don't know if it will be so easy as I don't know how you use it. You can also use WinForms implementation – dkozl Apr 30 '15 at 16:54
I tried that but I never added a reference to WindowsFormsIntegration – software is fun Apr 30 '15 at 17:01
For WPF follow this tutorial(http://www.wpf-tutorial.com/misc-controls/the-windowsformshost-control/), at least to get the browser running – user254197 Jun 13 '15 at 04:43

How can I get an HtmlElementCollection from a WPF WebBrowser

1 Answers1

Linked

Related