using System;
using System.Security.Principal;
using System.Threading;
public class Starter 
{
        public static void Main() 
        {
                AppDomain.CurrentDomain.SetPrincipalPolicy(
                        PrincipalPolicy.WindowsPrincipal);
                WindowsPrincipal wp=(WindowsPrincipal)
 				  Thread.CurrentPrincipal;
                if(wp.IsInRole(@"BUILTIN\Administrators"))
                        Console.WriteLine(
                        "{0} is an administrator.",
                                wp.Identity.Name);
                if(wp.IsInRole(
                        WindowsBuiltInRole.Administrator))
                Console.WriteLine("{0} is an administrator.",
                        wp.Identity.Name);
        }
}