Array list and inheiritance

[kevinprog]

Newbie C# programmer here.

I have a base class A which has a method for id. Now I have class B which inheirits from B and has a method for expiry date. Finally I have class C which inheirits from B and has a method for printing names.

If I were to instantiate each one of these types of classes and put them into an array list. How do I search for an object based on id? Or how would I search based on expiry date?

 

[Ruffnekk]

You can search all three classes on id, since it is inherited by all, but class A doesn't have the expiry date property/method, so you can't use that.

Regards, Ruffnekk
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