visual studio 2010 - How to use MasterPage for WebPage in SubDirectory? -

parser error or master page error?

parser error picture

i have website masterpage in visual studio 2010 project.

i have many webforms located in subdirectories, question focus on subdirectory called /contact.

in vs2010, of webforms in /contact directory display supposed using page directive code:

<%@ masterpagefile="~/site.master" ... %>

it understanding ~/ supposed direct page root folder.

yet, when go page in folder, parser error saying masterpage not exist because page attempting load masterpage here:

'/contact/site.master'

if modify vs2010 project page directive tries step root level, vs project give me master page errors.

does not work:

<%@ masterpagefile="../~/site.master" ... %>

also not work:

<%@ masterpagefile="~/../site.master" ... %>

master page error

what trick here?

something wrong in visualstdio @ end.

i pretty sure doing correct.

i tried creating asp.net project, added folder called contact , dragged default.aspx page inside it

this code in markup file

<%@ page title="home page" language="c#"  masterpagefile="~/site.master" autoeventwireup="true"     codefile="default.aspx.cs" inherits="_default" %>

here folder structure.

every things works @ end. enter image description here

btw if indeed trying read masterpage page in contact folder , framework somehow looks inside contact root try

../site.master