I have an Access 2010 project (.adp) sitting on top of a sql server db. I added a new fields to an underlying sql table, now I want to add that field as a column on a form in datasheet view. The form already exists. I can add the new field to the detail view ok, but in datasheet view the "add existing fields" option in the ribbon is greyed out. Does anyone know how to enable this button for the form datasheet? Thanks