C# and saving data to Access Table

The following code geenrated by C# automatically is supposed to save changes
on a form with a dataset to the underlying table. For some reason it will not
work with Access or SQL. Any ideas why? I get not error, it appears to update
the table, but it does not when you look at the table or reload the form.

private void customerBindingNavigatorSaveItem_Click(object sender,
EventArgs e)
{
this.Validate();
this.customerBindingSource.EndEdit();

this.customerTableAdapter.Update(this.accessTest1DataSet.Customer);

}