如何使用LINQ在List <Order>中获取产品的唯一条目

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

class Order
{
    public int Id { get; set; }
    public string Product { get; set; }
}

class Program
{
    static void Main(string[] args)
    {
        List<Order> orders = new List<Order>
        {
            new Order { Id = 1, Product = "ProductA" },
            new Order { Id = 2, Product = "ProductB" },
            new Order { Id = 3, Product = "ProductA" },
            new Order { Id = 4, Product = "ProductC" },
            new Order { Id = 5, Product = "ProductB" },
        };

        var uniqueProducts = orders.Select(o => o.Product).Distinct();

        foreach (var product in uniqueProducts)
        {
            Console.WriteLine(product);
        }
    }
}