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Call VFP9 COM Object To Evaluate User Supplied Formulas

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Auguy

Auguy

Programmer
May 1, 2004
1,206
US
I'm want to allow users to enter formulas based on some of the fields in my tables. I've done a little searching and seen some .NET calculators and expression parsers. Most seem to be fairly complicated. I'm wondering if I can create a COM object in VFP9 and call it from .Net. The reason I think this might be easier is because of the Evaluate() command allowing you to do something like this in VFP9
Code: 
Price=12.34
Qty=22
?EVALUATE("Price * Qty")
and the result returned is 271.48. I could then call this COM object passing the parameters Price & Qty to get my results. Is this feasible, worth pursuing and easier than trying to get one of the .NET calculators to work?


Auguy
Sylvania/Toledo Ohio
 
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