Why does HtmlElement's GetAttribute() method return "mshtml.HTMLInputElementClass" instead of the attribute's value?

Question

Why does HtmlElement's GetAttribute() method return mshtml.HTMLInputElementClass instead of the attribute's value, when I'm trying to obtain the value of a form's action attribute?

HtmlElementCollection elements = webBrowser1.Document.Forms;
   foreach (HtmlElement element in elements)
        MessageBox.Show(element.GetAttribute("action") + "");

Sample that works: http://www.w3schools.com/TAGS/tryit.asp?filename=tryhtml_form_submit — Hans Passant, Sep 27 '10 at 16:30
It appears that the form's action leads to a https page. Should this be the cause? — luvieere, Sep 27 '10 at 16:40

score 3 · Accepted Answer · answered Oct 21 '10 at 10:25

It seems to be an IE bug.

Here is a solution : add a reference to Microsoft.mshtml, then :

if(element.GetAttribute("action").Equals("mshtml.HTMLInputElementClass"))
{
    mshtml.IHTMLFormElement iForm = (mshtml.IHTMLFormElement)element.DomElement; 
    string action = iForm.action;
}

Hope this help :)

Why does HtmlElement's GetAttribute() method return "mshtml.HTMLInputElementClass" instead of the attribute's value?

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