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Proper Encapsulation Techniques?
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À
04/09/1998 11:58:11
Tim Hockin
Illinois State U - Residential Computing
Normal, Illinois, États-Unis
Information générale
Forum:
Visual FoxPro
Catégorie:
Classes - VCX
Divers
Thread ID:
00131613
Message ID:
00133377
Vues:
16
>>because you can't simply use the controlsource (which you can with properties >of the bizobj).
>
>ahhh..I see that point. Are these books available yet?
>
>I am still interested in how one implements a grid using bizObj's?
>
>So bizObjs's eliminate the need for table/row buffering (which I had endless problems with) at the form level. Just for kicks-n-giggles - would someone post code from a real-live bizObj that they use?
>
>Tim

Tim,

The books can be ordered at www.hentzenwerke.com. They ar ein tehf inal stages of completion so they should actually ship quite soon.

Grids are a unique beast in the realm of N-Tier desing. To imp[lement a grid you would need to either provide a cursor form the bizobj that the grid can attach to, or provide an ADO or RDO that the interface can covnert into a cursor for the grid.

Lists would be easier to manage becasue they can use their AddListObject method to add rows while querying the bizobj for the data.

In either case, the C/S model precludes browsing entire tables since the number of records in the data source can astronomical.
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