using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Security;

using System.Security.Permissions;

​

namespace Wrox.ProCSharp.Security

{

    public class Program

    {

        public static void Main()

        {

            CodeAccessPermission permissionA =

               new FileIOPermission(FileIOPermissionAccess.AllAccess, @"C:\");

            CodeAccessPermission permissionB =

               new FileIOPermission(FileIOPermissionAccess.Read, @"C:\temp");

            if (permissionB.IsSubsetOf(permissionA))

            {

                Console.WriteLine("PermissionB is a subset of PermissionA");

            }

​

        }

    }

}

​