Datagrid view selected records

[minime]

Hi,

Looking for some ideas really, I have a datagrid view which displays records.
A user can select a record by pressing space, at which point the text for that record goes bold and the key of that record is written to a database, the idea being that a user could view selected records only.

My query is would it be possible if the data was reloaded into the datagrid (say if the program was closed and reopened) to make the selected records bold again, without having to process every record in the datagrid to check if it was selected? I have thought about adding a selected field to the database but still have the same problem with that.

Thanks in advance