A simple shuffled collection implementation in C# using the Fisher-Yates algorithm.
PM> Install-Package ShuffleBag
Just add using ShuffleBag and you can easily shuffle collections:-
var suits = Enum.GetValues(typeof(Suit)).Cast<Suit>();
var ranks = Enum.GetValues(typeof(Rank)).Cast<Rank>();
var cards = suits.SelectMany(
suit => ranks,
(suit, rank) => new Card(suit, rank)); // Cards not included!
var deck = cards.Shuffle(); // Easily shuffle collections
var hand = deck.Take(5);
var reshufflingDeck = cards.ShuffleIndefinitely() // "Reshuffle" when empty
var reallyBigHand = deck.Take(104);