The only sure way is to USE MyFile EXCLUSIVE and have an ON ERROR rountine trap the error if you can't get it exclusive.

>Hi.
>I have a form, with a file set up in the data environment.
>On a button of the form, I have code to Zap the file.
>
>How do I:
>(1) Set Exclu on for the file (so that I can zap it)
> (Overall in my APP, Exclu is set off so from the DE, the file will not be open exclusively)
>
>(2) Ensure there is nobody else using the file (including users in non VFP products who could have the file open (e.g. report Writer)
>
>Thanks in advance for any assistance
>
>regards,
>
>Gerard