CSLA.NET 3.5: how to track the deleted item in ListChangedEvent?

Perhaps you could expose DeletedList to UI?  Why do you need to keep track of those, BTW?

Sergey Barskiy

Principal Consultant

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Hi,

for a WinForms data binding scenario I need to track which items are delete from a BusinessListBase.

The problem is, that by the time the ListChangedEvent fires the item is not in the list anymore and the NewIndex which is passed through the ListChangedEvent is out of bound for the original list (as the item is already moved to the deletedList).

It's also not possible to look at the latest item in the deletedItems list as this is internal to BusinessListBase.

Any suggestions on how to do this please?

Thanks a lot,
Patrick

PS: Here is the code from BusinessListBase for reference:

protected override void RemoveItem(int index)
{
    // when an object is 'removed' it is really
    // being deleted, so do the deletion work
    C child = this[index];
    bool oldRaiseListChangedEvents = this.RaiseListChangedEvents;
    try
    {
        this.RaiseListChangedEvents = false;
        RemoveIndexItem(child);
        RemoveFromMap(child);
        base.RemoveItem(index);
    }
    finally
    {
        this.RaiseListChangedEvents = oldRaiseListChangedEvents;
    }
    if (!_completelyRemoveChild)
    {
        // the child shouldn't be completely removed,
        // so copy it to the deleted list
        CopyToDeletedList(child);
    }
    if (RaiseListChangedEvents)
        OnListChanged(new ListChangedEventArgs(ListChangedType.ItemDeleted, index));
}