使用 LINQ 映射集合

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

class Program
{
    static void Main(string[] args)
    {
        List<int> numbers = new List<int> { 1, 2, 3, 4, 5 };

        List<string> strings = numbers.Select(x => x.ToString()).ToList();

        foreach (string str in strings)
        {
            Console.WriteLine(str);
        }
    }
}