how to deny user to access sub folders and file?

on local machine ,i created sample project on mvc4 (razor) and create directory named "x" and put a text file "a.txt" in it.

http://localhost:64471/x/a.txt

in my web config i deny all user to access to "x" folder by this config:

<location path="x">
<system.web>
  <authorization>
    <deny users="*"/>
  </authorization>
</system.web>

Now if user send this request :

http://localhost:64471/x/ 

it works and return user to URL that defined in forms tag in web config.

but when user send this request :

http://localhost:64471/x/a.txt

can read text file in browser(browser shows contents of text file).

i want to know how to deny user to access all files and subfolders in "x" folder?

I tested with path="x" in root web.config. It restrict everything under x folder; it won't even let me browse ~/x. I get redirected to login page.

Could you try full path to a.txt like this in root web.config?

<location path="x/a.txt">
  <system.web>
    <authorization>
      <deny users="*"/>
    </authorization>
  </system.web>
</location>

If it still doesn't work, you can try creating a web.config inside x folder with the following content.

<?xml version="1.0"?>
<configuration>

  <location path="a.txt">
    <system.web>
      <authorization>
        <deny users="*"/>
      </authorization>
    </system.web>
  </location>

</configuration>