using System;
using System.Linq;

public class Test
{
	public static void Main()
	{
	var itemNames = new [] { "a", "b", "c" };
    var items1 = itemNames.Select(x => new Item(x));
    var surprise = items1.Contains(items1.First());
    var items2 = itemNames.Select(x => new Item(x)).ToList();
    var noSurprise = items2.Contains(items2.First());
        Console.WriteLine(surprise);
        Console.WriteLine(noSurprise);
	}
}

class Item
{
    public Item(string name)
    {
        Name = name;
    }

    public string Name
    {
        get; set;
    }

    public override string ToString()
    {
        return Name;
    }
}