Databound Listbox SelectedItem

I have a listbox bound to a datasource, which gets updated.

When it does the selected index remains the same. Meaning, that the selected item is different, since the order/number of items could change as the datasource is updated.

Is there any way round this?

Exactly what is the control bound to? Can you provide some example code we can execute to demonstrate the issue?

It's bound to a class derived from BindingList of custom objects, which only every has items added or removed (the list isn't cleared and repopulated).

All i did was add AddRange / RemoveRange functions as below:

Code:

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public void AddRange(IEnumerable<T> Items, IEqualityComparer<T> Comparer)
        {
            foreach (T Item in Items)
            {
                if (!this.Items.Contains(Item, Comparer))
                    this.Items.Add(Item);
            }
            OnListChanged(new ListChangedEventArgs(ListChangedType.Reset, 0));
        }

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I may have answered my own question. Is this issue caused by me using the Reset listchangedtype enumeration value?
I used that figuring no others were appropriate since it wasn't just one index that was changing.