Question

I have a winform and a WebBrowser control and I am changing an option in select HTML control.

webBrowser1.Document
    .GetElementsByTagName("select")[4]
    .GetElementsByTagName("option")[13]
    .SetAttribute("selected", "true");

Now it works and selects the required option, but it does not fire the onchange event. The select does not have an element id but it does have a class name.

I tried:

webBrowser1.Document
    .GetElementsByTagName("select")[4]
    .RaiseEvent("onchange");

and

webBrowser1.Document
    .GetElementsByTagName("select")[4]
    .GetElementsByTagName("option")[13]
    .RaiseEvent("onchange");

But in vain.

Answer 1

I tried and sent a TAB key after selecting an option and it raised the onchange event.

    webBrowser1.Document.GetElementsByTagName("select")[4].Focus();
    webBrowser1.Document.GetElementsByTagName("select")[4]
.GetElementsByTagName("option")[13].SetAttribute("selected", "true");
    SendKeys.Send("{TAB}");

Everything is good now.