[RESOLVED] DataAdapter.Update not updating Access db

I'm sorry to start a thread on such a basic problem, but I cannot find what I'm doing wrong.

VS 2005, Access 2003 database (created in Access 2007). (Note, I'm working largely from "Beginning Visual Basic 2005 Databases" by Thearon Willis as a reference).

A quick intro before my code. This is a simple database application for the roster of my wrestling team. I have created a Jet database with multiple tables ("Wrestler", "Equipment", "Attendance", etc.). I am using an adapter to fill a dataset (from stored queries in the database file), then using a binding context to display the fields in textboxes on my form (along with navigation buttons). All of this seems to work fine and I can navigated through the records.

However, my "save" button doesn't seem to update the database file. Here's the code:

Code:

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        dbCommand.Parameters.Add("@LastName", OleDbType.VarChar, 50, txtLastName.Text)
        dbCommand.Parameters.Add("@FirstName", OleDbType.VarChar, 30, txtFirstName.Text)
        dbCommand.Parameters.Add("@Status", OleDbType.VarChar, 20, cboStatus.Text)
       
        dbCommand.Parameters.Add("@CohortClass", OleDbType.Numeric, 0, nudCohort.Value)
        dbCommand.Parameters.Add("@Phone", OleDbType.VarChar, 20, txtTelephone.Text)

[SNIP] (You get the idea)       


        dbCommand.CommandText = "usp_UpdateWrestler"
        dbCommand.CommandType = CommandType.StoredProcedure
        dbCommand.Connection = dbConnection

        dbAdapter.UpdateCommand = dbCommand
        dbAdapter.Update(dbDataset, "Wrestler")

---

I suspect I'm missing something obvious. Any suggestions greatly appreciated!

Thanks,
Tim

Just a quick update:

As I pore through MSDN, I'm tinkering with my .Add statements. It seems like maybe I need to set the .Value or .SourecColumn properties, but I'm not sure if I'm on the right track.

Still no luck, so please let me know if you have any ideas.

Thanks,
Tim