用于按特定集合列表排序的LINQ查询

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

public class Program
{
    public static void Main()
    {
        List<int> numbers = new List<int> { 5, 2, 8, 1, 9 };

        // 使用OrderBy方法进行升序排序
        var ascendingOrder = numbers.OrderBy(n => n);

        Console.WriteLine("升序排序结果：");
        foreach (var number in ascendingOrder)
        {
            Console.WriteLine(number);
        }

        // 使用OrderByDescending方法进行降序排序
        var descendingOrder = numbers.OrderByDescending(n => n);

        Console.WriteLine("降序排序结果：");
        foreach (var number in descendingOrder)
        {
            Console.WriteLine(number);
        }
    }
}

升序排序结果：
1
2
5
8
9
降序排序结果：
9
8
5
2
1