Pointing Problems

Kay

private void button1_Click(object sender, EventArgs e) { Card Card1 = new Card(); Card Card2 = new Card(); Card1.Value = 3; Card1.Suit = 3; Card2 = Card1; Card2.Suit = 2; } public class Card { public int Suit; public int Value; public Card() { Suit = 0; Value = 0; } } I step through the Button1 code and any changes on Card2 are updated across to Card1 like they were the same or if card2 were simply pointing to card1. What have I done wrong? THanks

3 Replies

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Roei Bar17y ago

Sorry for the Delay here is the fixed Code:

 private void button1_Click(object sender, EventArgs e)
 { 
 Card Card1 = buildBaseCard();
 Card Card2 = buildBaseCard();
 Card2.Suit = 2; 
} 
private Card buildBaseCard()
{
 Card baseCard = new Card(); 
 baseCard.Value = 3; 
 baseCard.Suit = 3; 
 return baseCard;
}
public class Card 
{ 
public int Suit; 
public int Value; 
public Card() 
{ 
Suit = 0; 
Value = 0; 
}
}

Kay17y ago
Ok, so how do i actually duplicate it rather than point to it? So that Card2 is entirely seperate to Card1 but starts off with the same values?
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Roei Bar17y ago
well the problem is in the following

Card2 = Card1

when you did that you actually told the compiler to put a pointer from Card1 to Card2

meaning that Card2 is actually Card1.

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