using System;

using System.Linq;

using System.Collections.Generic;

​

public class Item

{

    public int i;

    public string name;

    public bool b;

}

public class Program

{

    public static void Main()

    {

        var lots = new List<Item> { new Item { i = 0, name = "item 0", b = false }, new Item { i = 1, name = "item 1", b = false }, new Item { i = 2, name = "item 2", b = false } };

        var test = lots.AsQueryable().Where(o => o.b == false);

        Console.WriteLine(test.Count());

        var result = test.Where(o => o.i == 0 || o.i == 2);

        Console.WriteLine(result.Count());

    }

}