Copying large collections without iteration

I had go through an  interesting  situation where I had to copy items from one collection to another.The problem was that the collection was very large and iterating through it was not a very good option . I solved the problem using the snippet below

This example is just a representation of the problem. In My situation the stack had 100 thousand integers  int .I had to copy it to a ordered list of integers

using System;

using System.Collections.Generic;

using System.Collections;

namespace testCollection

{

    class Program

    {

        static void Main(string[] args)

        {

            //Stack of integers

            Stack<int> stackCollection = new Stack<int>();

            stackCollection.Push(1);

            stackCollection.Push(2);

            stackCollection.Push(3);

            stackCollection.Push(4);

            stackCollection.Push(5);

            //copying the items of stack into the ordered list

            List<int> listCollection = new List<int>(stackCollection);

            Console.WriteLine(listCollection.Count);

   }

   }
}