static void Main(string[] args)
{
ConcreteCollection a = new ConcreteCollection();
a.AddItem(1);
a.AddItem(2);
a.AddItem(3);
a.AddItem(4);
a.AddItem(5);
foreach (var element in a)
{
Console.WriteLine(element);
}
Console.ReadKey();
}
public ConcreteIterator(ConcreteCollection collection)
{
this._collection = collection;
}