C# Click html submit button with no id
<p>I have a page in my C# webbrowser that contains</p>

<pre><code>&lt;input type="submit" value="Sign out"&gt;
</code></pre>

<p>Since it does not have an id, I am unable to use the webbrowser's htmldocument to get it by an id and invoke its click. How would I click it using htmldocument now?</p>
