在 C# 中对 KeyValuePair 进行排序
csharpprogrammingserver side programming更新于 2025/9/22 20:37:17
使用 Sort 方法对 KeyValuePair 集合进行排序。
首先，设置集合 −
var myList = new List<KeyValuePair<int, int>>(); // 添加元素 myList.Add(new KeyValuePair<int, int>(1, 20)); myList.Add(new KeyValuePair<int, int>(2, 15)); myList.Add(new KeyValuePair<int, int>(3, 35)); myList.Add(new KeyValuePair<int, int>(4, 50)); myList.Add(new KeyValuePair<int, int>(5, 25));
要排序，请使用 Sort() 方法。其中，我们使用 CompareTo() 方法比较值 −
myList.Sort((x, y) => (y.Value.CompareTo(x.Value)));
以下是完整代码 −
示例
using System;
using System.Collections.Generic;
class Program {
static void Main() {
var myList = new List<KeyValuePair<int, int>>();
// adding elements
myList.Add(new KeyValuePair<int, int>(1, 20));
myList.Add(new KeyValuePair<int, int>(2, 15));
myList.Add(new KeyValuePair<int, int>(3, 35));
myList.Add(new KeyValuePair<int, int>(4, 50));
myList.Add(new KeyValuePair<int, int>(5, 25));
Console.WriteLine("Unsorted List...");
foreach (var val in myList) {
Console.WriteLine(val);
}
// Sort Value
myList.Sort((x, y) => (y.Value.CompareTo(x.Value)));
Console.WriteLine("Sorted List...");
foreach (var val in myList) {
Console.WriteLine(val);
}
}
}
输出
Unsorted List... [1, 20] [2, 15] [3, 35] [4, 50] [5, 25] Sorted List... [4, 50] [3, 35] [5, 25] [1, 20] [2, 15]
