如何从IList的object中的单个对象创建对象列表

using System;
using System.Collections.Generic;

public class Program
{
    public static void Main()
    {
        IList<object> objectList = new List<object>();
        objectList.Add(1);
        objectList.Add("Hello");
        objectList.Add(3.14);
        
        List<int> intList = new List<int>();
        
        foreach (object obj in objectList)
        {
            if (obj is int)
            {
                intList.Add((int)obj);
            }
        }
        
        Console.WriteLine("Int List:");
        foreach (int num in intList)
        {
            Console.WriteLine(num);
        }
    }
}