Hi,
From the code below, what happens when
MyColors mc = new MyColors(); inside Main method is executed?
It calls MyColors' default constructor, correct?
GetEnumerator() method should be called to make it work, but which line in Main method calls GetEnumerator() method?
Also using foreach (string color in mc) in Main method, I understand mc part.(since mc is enumerable now), but I don't understand how come 'string color in MyColors class' represent 'Color array's elements' in MyColors class?

using System.Collections;

namespace ColorCollectionEnumerator
{
    class ColorEnumerator : IEnumerator
    {
        string[] Colors;
        int position = -1;

        public ColorEnumerator(string[] theColors) // Constructor
        {
            Colors = new string[theColors.Length];
            for (int i = 0; i < theColors.Length; i++)
            {
                Colors[i] = theColors[i];
            }
        }

        public object Current  // Current
        {
            get { return Colors[position]; }
        }

        public bool MoveNext() // MoveNext
        {
            if (position < Colors.Length - 1)
            {
                position++;
                return true;
            }
            else
                return false;
        }

        public void Reset()    // Reset
        {
            position = -1;
        }
    }
    class MyColors: IEnumerable
    {
        string[] Colors = { "Red", "Yellow", "Blue" };

        public IEnumerator GetEnumerator()
        {
            return new ColorEnumerator(Colors);
        }
    }
    class Program
    {
        static void Main()
        {
            MyColors mc = new MyColors();
            foreach (string color in mc)
                Console.WriteLine("{0}", color);
            Console.Read();
        }
    }
}