C#/LINQ Quereying a class -

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i'm using sam jenkin's deck of cards class. i'm trying query cards in suit. i'm getting error:

cannot implicitly convert type 'system.collections.generic.ienumerable' 'system.collections.generic.ienumerable'. explicit conversion exists (are missing cast?)

i've tried moving things around i'm not understanding error. please help? code is:

var deck = new deck();          ienumerable<deck> deckquery =             mycard in deck.cards             mycard.suit == suit.club             select mycard.cardnumber;

my card class is: 

 public class card : icard {     public suit suit { get; set; }     public cardnumber cardnumber { get; set; } }

my enumerators are:

public enum suit {     club = 1,     diamond = 2,     heart = 3,     spades = 4, }  public enum cardnumber {     ace = 1,     2 = 2,     3 = 3,     4 = 4,     5 = 5,     6 = 6,     7 = 7,     8 = 8,     9 = 9,     ten = 10,     jack = 11,     queen = 12,     king = 13, }

you're selecting cardnumber, trying place deck:

// won't work: // ienumerable<deck> deckquery = ienumerable<cardnumber> deckquery =          mycard in deck.cards         mycard.suit == suit.club         select mycard.cardnumber;

the other option select card itself:

ienumerable<card> deckquery =          mycard in deck.cards         mycard.suit == suit.club         select mycard;

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