private void InsertContainer(int index, CompositeContainer container)
{
IEnumerable collection = _collections[index] = container.Collection;
foreach (object obj in collection)
{
base.InsertItem(index++, obj);
}
}
protected override void InsertItem(int index, object item)
{
CompositeContainer container = item as CompositeContainer;
if (null != container && null != container.Collection)
{
InsertContainer(index, container);
}
else
{
base.InsertItem(index, item);
}
}
