[VS2005] Insert for DetailsView control

[Marek]

I have DetialsView control and DropDownList control on the same page. I use
DropDownList.SelectedVlue as key for DetailsView control. I use

SELECT ... FROM table WHERE id_kont = @id_kont

where @id_kont is equal DropDownList.SelectedValue and it is work. But when
I try to do (for DetailsView control):

INSERT INTO table (id_kont,....) VALUES ( @id_kont,....)

then column id_kont is allways null. So is possibile to to do insert using
value from other control from the same page?

When I try (for example):

INSERT INTO table (id_konr,...) VALUES ( 3,....)

THEN id_kont have value equal 3.

MP