if master page includes means Inherits="" is same as form name r wat sir
in my master form
<![CDATA[<%@ Page Language="VB" MasterPageFile="~/Home.master" AutoEventWireup="false" CodeFile="Alumniformdetail.aspx.vb" Inherits="Alumniformdetail" title="Untitled Page" %>
and in my home form
<![CDATA[<%@ Page Language="VB" MasterPageFile="~/Home.master" AutoEventWireup="false" CodeFile="main.aspx.vb" Inherits="Home" title="Untitled Page" %>
i renamed home as main