C# Reflection

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ConsoleApplication2
{
    class Program
    {
        static void Main(string[] args)
        {
            Type t = typeof(X_Class);
            var tt = t.GetProperties().Where(i => i.PropertyType.Equals(typeof(Zeta)));
            foreach (var item in tt)
            {
                Console.WriteLine(item.Name.ToString());
            }

            Console.ReadLine();
        }
    }

    class X_Class
    {
        public Zeta Y_Property { get; set; }
        public Zeta W_Property { get; set; }
    }

    class Zeta
    {
    }

}