【C#】dictionary获得第一个key

using System;
using System.Collections.Generic;

class Program
{
static void Main(string[] args)
{
Dictionary<int, string> myDictionary = new Dictionary<int, string>();

    // 添加元素到字典
    myDictionary.Add(1, "Apple");
    myDictionary.Add(2, "Banana");
    myDictionary.Add(3, "Orange");
    
    // 获取第一个键
    int firstKey = myDictionary.Keys[0];
    
    Console.WriteLine("First Key: " + firstKey);
}

}