LINQ to SQL (NHibernate)：OrderBy与OrderByDescending抽象

using System;
using System.Linq;

// LINQ to SQL实体类
public class Customer
{
    public int Id { get; set; }
    public string Name { get; set; }
    public DateTime RegistrationDate { get; set; }
}

public class Program
{
    public static void Main(string[] args)
    {
        // 模拟LINQ to SQL查询结果
        var customers = new[]
        {
            new Customer { Id = 1, Name = "John", RegistrationDate = new DateTime(2022, 1, 1) },
            new Customer { Id = 2, Name = "Alice", RegistrationDate = new DateTime(2021, 12, 1) },
            new Customer { Id = 3, Name = "Bob", RegistrationDate = new DateTime(2022, 2, 1) }
        };

        // 使用OrderBy方法按照注册日期升序排序
        var ascendingOrder = customers.OrderBy(c => c.RegistrationDate);
        Console.WriteLine("按照注册日期升序排序：");
        foreach (var customer in ascendingOrder)
        {
            Console.WriteLine($"Id: {customer.Id}, Name: {customer.Name}, Registration Date: {customer.RegistrationDate}");
        }

        // 使用OrderByDescending方法按照注册日期降序排序
        var descendingOrder = customers.OrderByDescending(c => c.RegistrationDate);
        Console.WriteLine("按照注册日期降序排序：");
        foreach (var customer in descendingOrder)
        {
            Console.WriteLine($"Id: {customer.Id}, Name: {customer.Name}, Registration Date: {customer.RegistrationDate}");
        }
    }
}

按照注册日期升序排序：
Id: 2, Name: Alice, Registration Date: 12/1/2021 12:00:00 AM
Id: 1, Name: John, Registration Date: 1/1/2022 12:00:00 AM
Id: 3, Name: Bob, Registration Date: 2/1/2022 12:00:00 AM
按照注册日期降序排序：
Id: 3, Name: Bob, Registration Date: 2/1/2022 12:00:00 AM
Id: 1, Name: John, Registration Date: 1/1/2022 12:00:00 AM
Id: 2, Name: Alice, Registration Date: 12/1/2021 12:00:00 AM