// Called when an item is deleted from the ItemsSource as opposed to just being unselected
internal void Delete(int slot, object item)
{
if (_oldSelectedSlotsTable.Contains(slot))
{
this.OwningGrid.SelectionHasChanged = true;
}
DeleteSlot(slot);
_selectedItemsCache.Remove(item);
}
internal bool ContainsSlot(int slot)
{
return(_selectedSlotsTable.Contains(slot));
}