DisplayNameAttribute Localized

So here is a simple Attribute, extending the DisplayNameAttribute, inspired from a post on stackoverflow

using System;
using System.Linq;
using System.ComponentModel;
using System.Reflection;
using System.Resources;

namespace MvcExtensions.Attributes
{
    [AttributeUsage(AttributeTargets.Property  AttributeTargets.Field, AllowMultiple = false)]
    public class DisplayNameLocalizedAttribute : DisplayNameAttribute
    {
        public DisplayNameLocalizedAttribute(Type resourceType, string resourceKey)
            : base(LookupResource(resourceType, resourceKey)) {  }

        internal static string LookupResource(Type resourceType, string resourceKey)
        {
            PropertyInfo property = resourceType.GetProperties().FirstOrDefault(p => p.PropertyType == typeof(System.Resources.ResourceManager));
            if (property != null)
            {
                return ((ResourceManager)property.GetValue(null, null)).GetString(resourceKey);
            }
            return resourceKey;
        }
    }
}

An I use it simply like this:

using MvcExtensions.Attributes;
using MyMvc2Rc2TestApp.App_LocalResources;

namespace MyTestMVC2App.Areas.UserManagement.Models
{
    public class User
    {
        [DisplayNameLocalized(typeof(DisplayName), "User_UserName")]
        public string UserName { get; set; }
        [DisplayNameLocalized(typeof(DisplayName), "User_Password")]
        public string Password { get; set; }
        [DisplayNameLocalized(typeof(DisplayName), "User_FirstName")]
        public string FirstName { get; set; }
        [DisplayNameLocalized(typeof(DisplayName), "User_LastName")]
        public string LastName { get; set; }
        [DisplayNameLocalized(typeof(DisplayName), "User_Email")]
        public string Email { get; set; }
    }
}

I have a DisplayName.resx file in App_LocalResources, it is an Embedded Resource with Public Access Modifier