[2005] DataTable doesn't reflect DataBase

I should know this by now, but the solution eludes me. I have a DataGridView that is bound to a BindingSource; The BindingSource is bound to a DataTable, which is filled from a DataBase Table.

Now, all changes are made to the DataBase Table. The DataGridView is ReadOnly. However, any changes made to the DataBase Table do no propagate to the DataTable > BindingSource > DataGridView.

How can I show the changes without clearing and re-filling the DataTable?

Thank you in advance!