c# keyvaluepair如何清空

using System;
using System.Collections.Generic;

class Program
{
    static void Main()
    {
        // 创建一个KeyValuePair集合
        KeyValuePair<string, int>[] keyValuePairs = new KeyValuePair<string, int>[3];
        keyValuePairs[0] = new KeyValuePair<string, int>("apple", 1);
        keyValuePairs[1] = new KeyValuePair<string, int>("banana", 2);
        keyValuePairs[2] = new KeyValuePair<string, int>("orange", 3);

        // 输出集合中的元素
        Console.WriteLine("Before clearing:");
        foreach (KeyValuePair<string, int> pair in keyValuePairs)
        {
            Console.WriteLine($"Key: {pair.Key}, Value: {pair.Value}");
        }

        // 清空集合
        Array.Clear(keyValuePairs, 0, keyValuePairs.Length);

        // 输出清空后的集合
        Console.WriteLine("\nAfter clearing:");
        foreach (KeyValuePair<string, int> pair in keyValuePairs)
        {
            Console.WriteLine($"Key: {pair.Key}, Value: {pair.Value}");
        }
    }
}