Why is datagridview not committing changes to the database in vb.net?

Using Visual studio 2005 Vb.net I  automatically generated a bound datagridview
It used a data adapter to fill the data table. It also set the DataSource of a binding source to the data table and then bound the binding source to a datagridview. After you update in the datagridview, it
use the data adapter to save the changes to the database. The problem is although i see the changes in the application it never appears in the databse. The save is the following:
Me.validate()
Me.WorkspaceBindingSource.EndEdit()
Me.WorkspacetableAdaptor.Update(Me.driverdataset.Workspace)

No errors are raised on the save.  Thanks in advance for your time!!