FindFieldTemplate() return always null
<p>I have a problem with Asp.net 4.0 Dynamic Data.
I've created a CustomField Template that contains FileUpload control and I need to access to it in the Insert.aspx page of Dynamic Data.</p>

<pre><code> protected void Custom_ItemInserting(object sender, EntityDataSourceChangingEventArgs e)
    {
        News news = (News)e.Entity;
        var fldTmpUsrCtl = FormView1.FindFieldTemplate("Image");
    }
</code></pre>

<p>fldTmpUsrCtl var is always null!! Why???
Help!!!! </p>
