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Set Filter performance in Browse versus Grid
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De
24/10/1999 18:36:28
Nancy Folsom
Pixel Dust Industries
Washington, États-Unis
 
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Forum:
Visual FoxPro
Catégorie:
Autre
Divers
Thread ID:
00279680
Message ID:
00280690
Vues:
15
Marcel-

Perhaps I misunderstand your point, but browse is also slower with a filter applied than a browse without a filter. It seems faster than a grid, because as David says, only enough records to fill the visible browse window are pulled in at a time. Whereas, the grid is populated with the cursor.

So, in either a grid or a browse, each record is evaluated against the filter criteria, but the grid does it for the entire cursor and the browse does it for a subset.

You can duplicate that in grids by using p-views and limiting how many records are gathered at a time.

>Slowness of Grids objects with the SET FILTER command in not a matter of perception. ( each record is evaluated before the Grid show the first matching record ! )
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