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Getting value from a table opened in a different DS
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À
10/03/2010 16:20:48
Cetin Basoz
Engineerica Inc.
Izmir, Turquie
Information générale
Forum:
Visual FoxPro
Catégorie:
Codage, syntaxe et commandes
Versions des environnements
Visual FoxPro:
VFP 9 SP2
OS:
Vista
Network:
Windows 2003 Server
Database:
MS SQL Server
Divers
Thread ID:
01453599
Message ID:
01453827
Vues:
50
>>>Create a class "Datamapper" as custom, that has on property and two methods:
>>>DataMapper.Aliasname
>>>dataMapper.Getvalue()
>>>datamapper.setvalue()
>>>
>>>The getValue() method is as follows:
>>>
>>>LPARAMETERS tcFieldname
>>>RETURN EVALUATE(THIS.Aliasname + "." + tcFieldname)
>>>
>>>
>>>and the setvalue() method is as follows:
>>>
>>>LPARAMETERS tcFieldname, tvValue
>>>REPLACE (tcfieldname) WITH tvvalue IN (THIS.AliasName)
>>>
>>>
>>>In your form, do the following code:
>>>
>>>MainapplicationObject.NEWOBJECT("Datamapper","Datamapper","LibraryWhereDatamapperexist")
>>>MainapplicationObject.Datamapper.Aliasname = ??? *you should know the aliasname here.
>>>MyValue = MainapplicationObject.Datamapper.GetValue("MyField")
>>>
>>>
>>>What do you think?
>>>
>>
>>Yes, I like the idea - looks like it will work well - how this design pattern is called?
>
>
>Oh my and you were saying that wouldn't touch application object class anyway:) You succeeded to confuse me.
>Cetin

This method doesn't require any changes of the existing method's code in the application object.
If it's not broken, fix it until it is.


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