In ListBoxControl, SelectedItems has all of the collection methods private. You can't create any other list from it. There is no CopyTo, etc. Why is this?

Hello Paul,

The ListBoxControl.SelectedItems property returns an instance of the SelectedItemCollection class. The SelectedItemCollection class is build upon the ICollection interface and explicitly implements the ICollection.CopyTo(Array array, int index) method.

You can use it like this: ((ICollection)listBoxControl1.SelectedItems).CopyTo(...);

Hope this helps,
Holger