I've created several lookup fields programmatically in existing lists, currently they render with just one field as the text value, however I'd like them to display the contents of two text fields rather than just one, is there a way to do this without adding an additional column into the source field
i.e. display this
001 - Title 1
002 - Title 2
003 - Title 3
instead of this
Title 1
Title 2
Title 3