This will return the code table for a ddlb:

dw_control.Object.columnname.Values

The format of the string is the same as the datawindow source:

displayvalue1 tab datavalue1 forwardslash displayvalue2 tab datavalue2 forwardslash displayvalue3 tab datavalue forwardslash3

Exactly...and if you want to pull out a single value and know the index I'm thinking GetValue() should do the trick.