c＃list.OrderBy根本不起作用吗？ [英] c# list.OrderBy not working at all?

问题描述

我很难理解 list.OrderBy 的工作原理，而且我不明白自己在做什么错...我认为这很容易在某个地方犯了一些愚蠢的错误，或者它只是以我不了解的其他方式工作。无论如何，我想做的是根据属性对列表进行排序，我编写了一个简单的程序来说明我的意思。

I have a hard time understanding how the list.OrderBy works and I don't understand what I'm doing wrong... I think it's something easy that I made some stupid mistake somewhere or that it's just working in another way than I understood. Anyways, what I want to do is sort a list from an attribute, I've made a simple program to illustrate what I mean.

class Hero
    {
        public int level;
        public Hero(int level)
        {
            this.level = level;
        }

        static void Main(string[] args)
        {
            Hero hero1 = new Hero(1);
            Hero hero3 = new Hero(3);
            Hero hero2 = new Hero(2);

            List<Hero> list = new List<Hero>();
            list.Add(hero1);
            list.Add(hero3);
            list.Add(hero2);
            list.OrderBy(x => x.level).ToList();
            foreach (Hero x in list)
            {
                Console.WriteLine(x.level);
            }
        }
    }

输出如下： / p>

This gives the output:

1
3
2 

我想要输出：

1
2
3

有人可以向我解释为什么不这样做以及如何解决它？我对c＃还是很陌生。

Can anybody explain to me why it's not doing this and how I can fix it? I'm quite new with c#.

推荐答案

您 just 需要分配 OrderBy 返回。

list = list.OrderBy(x => x.level).ToList();

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