C# - How to convert List to List, when Dog is a subclass of Animal?

Question

I have a class Animal, and its subclass Dog. I have a List and I want to add the contents of some List<

Answer 1

You can use Cast ()

//You must have using System.Linq;

List dogs = new List ();
List animals = new List ();
animals.AddRange (dogs.Cast ());

EDIT : As dlev points out, if you run framework 4 you don't need to cast.