Add Column to Access database using OleDB

Question

Hi guys, I've been searching for this for 4 hours, but it just doens't seem to work. I have an access database, and i have to add a column to it. Here's my code: string connString = "Provider=Microsoft.Jet.OLEDB.4.0;" + @"Data Source=D:\My Documents\Visual Studio 2003.NET\VerboServe\Verboserve.mdb;" + "User ID=Admin;" + "Password="; OleDbConnection conn = new OleDbConnection(connString); DataSet ds = new DataSet(); conn.Open(); OleDbDataAdapter dataAdapter = new OleDbDataAdapter("SELECT * FROM Verbs", conn); OleDbCommandBuilder commandBuilder = new OleDbCommandBuilder(dataAdapter); dataAdapter.Fill(ds, "Verbs"); ds.Tables["Verbs"].Columns.Add("Wouter"); foreach (DataRow thisRow in ds.Tables["Verbs"].Rows) { thisRow["Wouter"] = "True"; } commandBuilder.QuotePrefix = "["; commandBuilder.QuoteSuffix = "]"; ds.AcceptChanges(); dataAdapter.Update(ds, "Verbs"); Can anyone tell me how to do this? Thanks, Wouter