WebBrowser control HTMLDocument automate selecting option drop-down

Question

I\'m trying to automate in a WinForm using a WebBrowser control to navigate and pull report info from a website. You can enter values in textboxes and invoke the click events fo

Answer 1

I'm answering on this post after five years, for the people who are searching a solution of this problem.

If you just need to submit/post a value for the dropdown then this line is sufficient:

webBrowser1.Document.GetElementById("term_id").SetAttribute("value", "200980");

But if you really need to select an underlying OPTION, then:

HtmlElement selectDom = webBrowser1.Document.GetElementById("term_id");
foreach (HtmlElement option in selectDom.GetElementsByTagName("option"))
{
    if (option.GetAttribute("value") == "200980")
    {
        var dom = option.DomElement as dynamic;
        dom.selected = true;
        // selectDom.InvokeMember("onChange"); // if you need this too
        break;
    }
}