Question

I have a ListBox which is bound to an instance of a list of elements of Class A, which is a collection.

class A : List<B> 
{ 
  public override ToString()
  {
    return "A";
  }
}

class C
{
  List<A> list;
}

ListBox:

<ListBox ItemsSource="{Binding list}"></ListBox>

When the application is run, every item shows “(Collection)”

What can I do to make each item show “A” instead of “Collection”?

Answer 1

To solve this problem I did the following:

class A : IEnumerable
{
  private List<B> _bList = new List<B>();

  public override ToString()
  {
    return "A";
  }

  IEnumerator GetEnumerator()
  {
    return _bList.GetEnumerator();
  }

  public void Add(B element){
  {
    _bList.Add(element);
  }
}

class C
{
  List<A> list;
}