WebBrowser Control - Invoke Script Problems with JavaScript Button

Question

I am trying to login to a website. I am able to fill out the form correctly with all of the connection information, but I cannot get the page to login. The button is a link without a name or id, so I can't click it directly. I have been working on invokeScript() stuff, but that doesn't seem to work either. This is the button code:

<div style="float:left; width:50px; margin: 0px auto 0px auto; text-align:center;">
    <div id="loginBtn">
        <a href="#" style="text-decoration:none; font-weight:bold; font-size: 10px; color:#FFFFFF;" onClick="javascript: LoginSubmit(event, true);" tabindex="3">
            Log In
        </a>
    </div>
</div>

How can I click a link like that?

I have tried stuff like this:

webBrowserControl.InvokeScript("LoginSubmit", "true" );

webBrowserControl.InvokeScript("LoginSubmit(event, true)");

and

webBrowserControl.InvokeScript("LoginSubmit", new object[] { new string[] { "event", "true" } });

This question doesn't even include what is (was) the error. Not useful when googling. — Léon Pelletier, Apr 13 '13 at 02:53

score 3 · Accepted Answer · answered Jun 12 '12 at 16:49

3

You may be missing Document, like so:

webBrowserControl.Document.InvokeScript(name, args)

if not try invoking the script with this wrapper method, extract:

private object MyInvokeScript(string name, params object[] args) 
{ 
    return webBrowserControl.Document.InvokeScript(name, args); 
}

…

int x = 50; 
int y = 100; 
MyInvokeScript("LoginSubmit",x, y);

answered Jun 12 '12 at 16:49

m.edmondson

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That worked, but not without the .Document in the method. I had to go webBrowserControl.InvokeScript. I got logged in though, so that's good! – Nathan Tornquist Jun 12 '12 at 16:52
Good stuff, glad I could help – m.edmondson Jun 12 '12 at 16:52
Yeah, thanks. I'll accept the answer in a bit. It's too early still. You already received my +1 though. – Nathan Tornquist Jun 12 '12 at 16:53
Nice answer, but he clearly specified he's using a WPF Browser, so it is obvious that there is no `.Document` member before the `InvokeScript` method. – Léon Pelletier Apr 13 '13 at 02:52

WebBrowser Control - Invoke Script Problems with JavaScript Button

1 Answers1