C# cooperative multitasking

coroutines.cs

using System;
using System.Collections.Generic;

public class Program 
{
    public static IEnumerable<bool> Coroutine1()
    {
        int i = 0;
        while (i < 100)
        {
            i += 2;
            Console.WriteLine("Coroutine1: {0}", i);
            yield return true;
        }
        Console.WriteLine("Coroutine1 finished");
    }
    
    public static IEnumerable<bool> Coroutine2()
    {
        int i = 0;
        while (i < 100)
        {
            i++;
            Console.WriteLine("Coroutine2: {0}", i);
            yield return true;
        }
        Console.WriteLine("Coroutine2 finished");
    }
    
    public static void Schedule(List<IEnumerator<bool>> coroutines)
    {
        bool finished = false;
        while (!finished)
        {
            finished = true;
            foreach (var coroutine in coroutines)
            {
                if (coroutine.MoveNext())
                {
                    finished = false;                    
                }
            }
        }
    }

    public static void Main()
    {
        List<IEnumerator<bool>> coroutines = new List<IEnumerator<bool>>()
        {            
            Coroutine1().GetEnumerator(),
            Coroutine2().GetEnumerator()
        };
        
        Schedule(coroutines);
    }
}