>>>>>>>How do I check if a dbf is already open?
>>>>>>
>>>>>>Do you mean by the current user, or by other users?
>>>>>
>>>>>Both
>>>>>
>>>>>Most important though is Current User
>>>>
>>>>See my updated reply.
>>>
>>>Where is your updated reply? I cant see it
>>
>>Can't you see it if you refresh my first reply? Anyway, this is what I added: For the current user, see Used() and Aused() in help. For other users, try to open the dbf exclusive.
>
>I am working on this same issue as well in an old legacy app. Can you tell me how you handle to trap this if in fact the file is open by another user when you test it with opening the dbf with exclusive?

Simple.

llOK = .T.
try 
   use myTable Exclusive
catch to loexception
   llOK = .F.
   messagebox( 'Someone else is using the table!')
endtry