C# 如何按 list.count 排序字典 <string, list<string>>？

Question

我有一个 dictionary，其中值是 list 个字符串。我想按每个 list 中的字符串数对字典进行排序。所以我打印的第一个kvp是list中元素数量最多的kvp。

我在 Whosebug 的另一个问题下看到了这个答案，但我想我遗漏了什么。

foreach (var kvp in teams.OrderBy(x => x.Value.Count))

Answer 1

你很接近，但听起来你想要下降：

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

public class Program
{
    public static void Main()
    {
        var teams = new Dictionary<string, List<string>>();
        teams.Add("Short List",  new List<string> {"One","Two"});
        teams.Add("Medium List", new List<string> {"One","Two", "Three"});
        teams.Add("Long List",   new List<string> {"One","Two", "Three", "Four"});

        foreach (var kvp in teams.OrderByDescending(x => x.Value.Count))
        {
            Console.WriteLine("Team {0} has {1} items.", kvp.Key, kvp.Value.Count);
        }
    }
}

输出：

Team Long List has 4 items.
Team Medium List has 3 items.
Team Short List has 2 items.

在 .NET Fiddle 上查看。

C# 如何按 list.count 排序字典 <string, list<string>>？

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