Need help with generic lists in c#

Questions & Answers
1

will someone tell me why this one won’t work. hand and playerdeck are dcard lists.

		Dcard tempcard;
		tempcard= playerdeck [0];
	    hand.Add (tempcard);		
		playerdeck.RemoveAt (0);

I get a “NullReferenceException: Object reference not set to an instance of an object” error when I add the tempcard to the hand. any ideas?

2

There is not enough information here to help you. What line is giving you an exception? Can you post the playerdeck code? Where is hand created?

If I had to guess, it would be that playerdeck or hand has not been created anywhere, i.e. you just have something like this:

List<Dcard> hand;
hand.Add(whatever);

you need to instantiate hand:

List<Dcard> hand = new List<Dcard>();