Code only follows, for now.
<form method="post" runat="server" >
<INPUT type="file" id="MyFileControl" runat="server"/>
<input type="submit"/>
</form>
private void Page_Load(object sender, System.EventArgs e)
{
System.Web.UI.HtmlControls.HtmlInputFile file =
(System.Web.UI.HtmlControls.HtmlInputFile)FindControl("MyFileControl");
}