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Determine if grid is empty not using recno
Message
De
11/08/2005 16:47:11
 
Information générale
Forum:
Visual FoxPro
Catégorie:
Gestionnaire d'écran & Écrans
Versions des environnements
Visual FoxPro:
VFP 9
OS:
Windows XP SP2
Network:
Windows 2003 Server
Database:
Visual FoxPro
Divers
Thread ID:
01040343
Message ID:
01040413
Vues:
16
>Tracy,
>
>I'm guessing that you can't use RECCOUNT() either. I'm also guessing that you can't use it because you have a RecordSource that has data, but also has a filter applied and you need to determine when no data meets the filter requirements. If all of that is the case, then you could do something like this:
>
>LOCAL ARRAY laCount[1]
>LOCAL lcFilter as String
>
>laCount = 0
>lcFilter = SET('Filter')
>
>SELECT COUNT(*) ;
>  FROM (thisform.Grid1.RecordSource) ;
>  WHERE &lcFilter
>
>RETURN (NVL(laCount[1], 0) > 0)
>
>Make that a function and it will return .t. if the current RecordSource contains any rows that meet the current filter condition.
>
>HTH,
>Chad
>

If you have a filterd index active, this is not sufficient.

>
>>Is there another way to determine if a grid is empty with zero rows (no records) without using EOF() on the recordsource of the grid?
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