Unbound items in a bound ComboBox

You are once again invited to read, reply and vote on my new article at CodeProject. The article demonstrates how to add unbound items to a bound ComboBox. The code uses a wrapper that implements the IList interface, and supply the ComboBox both the extra items, that are kept at the beginning of the drop-down list, and the normal items, taken from the DataSource. The article can be found here: http://www.codeproject.com/useritems/UnboundItemsComboBox.asp