Question

Our app (already deployed) is using an Access/Jet database. The upcoming version of our software requires some additional columns in one of the tables. I need to first check if these columns exist, and then add them if they don’t.

Can someone provide a quick code sample, link, or nudge in the right direction?

(I’m using c#, but a VB.NET sample would be fine, too).

Answer 1

Off the top of my head, but something like:

Dim conn as New AdoConnection(someConnStr) Dim cmd as New AdoCommand cmd.Connection = conn cmd.CommandText = 'ALTER TABLE X ADD COLUMN y COLUMNTYPE' cmd.ComandType = CommandType.Text cmd.ExecuteNonQuery()