Get the formname which is inside a master page.

Hello,
I want to get the name of the aspx form which is placed inside a master page. I have the following code where I am passing the name of the page as parameter. But my code is returning the null since ctlEnumerator.Current is showing the master page name. What changes should I do in my code to get the form name? Thanks in advance.
rivate HtmlForm __getHtmlForm(System.Web.UI.Page page) { IEnumerator ctlEnumerator = page.Controls.GetEnumerator(); while (ctlEnumerator.MoveNext()) { object curr = ctlEnumerator.Current;
if (curr is HtmlForm) { return ((HtmlForm)curr); } } return null; }