ConsoleApplication.cs

using System;

namespace ConsoleApplication
{
    enum Suit
    {
        DIAMOND,
        CLUB,
        HEART,
        SPADE
    };

    enum Rank
    {
        ACE = 1,
        TWO = 2,
        THREE = 3,
        FOUR = 4,
        FIVE = 5,
        SIX = 6,
        SEVEN = 7,
        EIGHT = 8,
        NINE = 9,
        TEN = 10,
        JACK = 11,
        QUEEN = 12,
        KING = 13
    };

    class Card
    {
        public Suit suit { get; set; }
        public Rank rank { get; set; }
    }

    public class Program
    {

        public static void Main()
        {
            var suits = Enum.GetValues(typeof(Suit));
            var ranks = Enum.GetValues(typeof(Rank));

            Card[] cards = new Card[52];
            int index = 0;

            foreach (Suit s in suits)
            {
                foreach (Rank r in ranks)
                {
                    Card card = new Card();
                    card.suit = s;
                    card.rank = r;
                    cards[index++] = card;
                }
            }

            foreach (Card c in cards)
            {
                Console.WriteLine("{0}: {1}", c.rank, c.suit);
            }
        }
    }
}