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The B3Evaluator is a simple to use string formula evaluator.
The B3Evaluator can perform expression evaluations on numerical expressions
as well as string expressions.Features Include:
- Variables
- Immediate Variables (special variables that are called back to your
code)
- User Defined Functions
- Standard Algebraic Notation
- PI and E predefined constants
- User definable TRUE/FALSE
Many of the standard mathematical functions are already built-in (Sin,
Cos, Tan, Min, Max, etc.) as well as the standard string functions (Left,
Right, Mid, Instr, BkInstr and Replace).
It's as easy to use...
string result = B3Eval1.Eval( "(2 + 2) / PI");
Use it for evaluating embedded formula in Grids or other like controls.
With the use of the Evaluators "Immediate Variables" you can easily embedded
cell references such as...
string result = B3Eval1.Eval( "Sum(@B3:B12)");
Easy to add your own functions to the Evaluator. Simply inform the
evaluator of your function name and how many parameters you are expecting.
B3Eval1.AddProtoType("MyFunction", 3);
An event will be fired when the evaluator needs your function resolved.
It will provide the function to process with the parameters already
evaluated and ready for you to use.
It's So Easy!
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