Datagrid comboboxer

Kan bedre hjælpe hvis din beskrivelse kommer på engelsk, det er lidt rodet da svenk/norsk har anden orstilling :-(

Ok. I'll try.
I have three table's:
Varekat: Vid, beskrivelse.
HovedGrp: Hid, Vid, beskrivelse.
UnderGrp: Uid, Hid, Beskrivelse.

I have an datagrid where i will show the values from these three tables (lookups), and save them in another tabel ('Vare'). I'll use ComboTextCol.ColumnComboBox, where i set the displaymember to be beskrivelse and the value member to be Vid (the id value from each table). This works fine as it is today. My problem is when I try to make a funcionality where the user choose a value from the combobox from table UnderGrp, and I want the values from Hovedgrp and VareKat to be selected automatically. The relation between the tables are that one post i Varekat can have several posts in HovedGrp and one post in HovedGrp can have several posts in UnderGrp.

nope, can't figure out what to do, but I'm sure there are others in the forum that can help you