Hello, I'm trying to understand role based security and I have the following method:

    [PrincipalPermission(SecurityAction.Demand, Role = "Administrators")]
    static void Test()
    {
        //administratos only can call this code
    }

What I wanna do is that only users that are members of the Windows Administrators group can call this code, however, if I do the following, it works:

        GenericIdentity genericIdentity = new GenericIdentity("test", "test");
        GenericPrincipal genericPrincipal = new GenericPrincipal(genericIdentity, new string[] { "Administrators" });
        AppDomain.CurrentDomain.SetThreadPrincipal(genericPrincipal);

        Test();

So, how can I make it work only if the user is in the Administrators windows group?

thanks!