DropDownList inaccessible
<p>I have a drop down list in my TopicTreeSearchControl, on my page, but from the actually page where the control sits, I get an error:</p>

<pre><code>'TopicSearchTree.ddlDatasources' is inaccessible due to its protection level
</code></pre>

<p>I am trying to do this from my page:</p>

<pre><code>protected override void Render(HtmlTextWriter writer)
{
    Page.ClientScript.RegisterForEventValidation(TopicSearchTreeControl.ddlDatasources.UniqueID);
    Page.ClientScript.RegisterForEventValidation(TopicSearchTreeControl.ddlYears.UniqueID);
    base.Render(writer);
}
</code></pre>

<p>How do I access this?</p>
