using System;
using System.Threading;
using System.Security;
using System.Security.Permissions;
using System.Collections.Generic;
using System.Text;
using System.Collections;
class Program
{
static void Main(string[] args)
{
System.Security.Principal.WindowsIdentity wi = System.Security.Principal.WindowsIdentity.GetCurrent();
Thread.CurrentPrincipal = new System.Security.Principal.WindowsPrincipal(wi);
Console.WriteLine(wi.Name);
Console.WriteLine(Thread.CurrentPrincipal.Identity.Name);
PrincipalPermission pp = new PrincipalPermission(null, "Administrators", true);
pp.Demand();
PrincipalPermission pp2 = new PrincipalPermission(null, "Users", true);
pp.Union(pp2).Demand();
try
{
PrincipalPermission pp3 = new PrincipalPermission(null, "Club");
pp3.Demand();
}
catch (SecurityException e)
{
Console.WriteLine("You do not have access to the secret club.");
}
}
}