catch down/up keystroke in the combobox of the datagrid

[amin gunawan]

I would like to make a combo box in the datagrid of VB.net.
I''ve seen some samples of the combobox in the grid (as you could found in section 5.9 of Windows Forms Datagrid at this forum or in the msdn library) but all samples of the combobox didn''t catch a down or up keystroke. So when selecting the item values of the combobox, i need to use my mouse for the selection. if I use the down/up keystroke, the cell in the grid move to down/up.

Anybody knows how to catch down/up keystroke in the combobox selection ?

Thanks