>Hi,
>
>I have several free tables that I wish to edit via frmDEGridNav2Pages.
>
>Is there any behavior built into this class that enforces the uniqueness of an entered index ? I mean truly unique, same as a primary key, but not using a DBC.
>

No, but establishing a Candidate key can be done on a free table, and VFP enforces the uniqueness of Candidate keys. A Primary key requires that the table be a member of a .DBC; a Candidate key can be established for a Tag in a .CDX, but the changes to implement the Candidate key will render the table/index incompatible with FoxPro 2.6 and other applications that don't know how to handle the extended header information in VFP 3 or later table formats.