using System;
using System.Security;
using System.Security.Principal;
using System.Threading;

class Starter
{

	static private PrincipalPolicy policy;

	public static void Main()
	{
		policy=PrincipalPolicy.WindowsPrincipal;
		Thread t=new Thread(new ThreadStart(SetPolicy));
		t.Start();
		t.Join();

		policy=PrincipalPolicy.UnauthenticatedPrincipal;
		t=new Thread(new ThreadStart(SetPolicy));
		t.Start();
		t.Join();

		policy=PrincipalPolicy.NoPrincipal;
		t=new Thread(new ThreadStart(SetPolicy));
		t.Start();
	}

	static public void SetPolicy()
	{
		string principal;

		Thread.GetDomain().SetPrincipalPolicy(policy);
		IPrincipal p=Thread.CurrentPrincipal;

		if(p is WindowsPrincipal)
			principal="Windows Principal";
		else if(p is GenericPrincipal)
			principal="Generic Principal";
		else 
			principal="No principal";

		Console.WriteLine("\n"+principal);
		if(p!=null)
			Console.WriteLine("Identity name: "+p.Identity.Name);
		else
			Console.WriteLine("No principal object");		
	}
}