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.
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