DetailsView and DataKeys

[MRW]

Hello!

I have a GridView (gv1). When clicked on, it brings up a record in a
DetailsView(dv1). I simply would like to edit what's in dv1 via an
objectdatasource. When I have the primarykey (RecordID), visible as a
databound column, RecordID is sent properly to the function.

However, if I make it read-only or invisible (which I prefer), RecordID
is not sent.

I've tried putting the tag DataKeysName=RecordID in dv1 along with:

<asp:ControlParameter Name="RecordID" ControlID="dv1"
PropertyName="DataKey" Type="Object"/>

in the Update Parameters. Yet, it still sends nothing.

How can I send information that I don't want displayed in the
detailsview to the update function?

Thank you for any help!