>The user usually has a primary pageframe displayed because it contains client information, telephone log, shipping,etc. This form is set to private datasession.
>
>The user can select other forms: Work In Progress, invoices, payments, etc. If the primary form is open, the other form opens using primary's datasession...if not, it uses default.
>
>The problem is, the user accidently closing the primary form when its datasession is being used by a second form.
>
>How can I prevent this from happening?

You can handle the datasession a little better with the new session object added in VFP-SP3

Arnon