MathParser - Math Formula Parser

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Introduction

MathParser is a class that can calculate the result of mathematic operations given as string such as "3+5/2-3*(1+3)". It can also calculate the result of parametric formulas such as 3A+5B/2C. Calculation is made by operation order(/,*,-,+) and parenthesis rule. In some projects, users want to create a formula dynamically. This is a useful method for calculating the values of these types of formulas.

Background

The basic idea of this code is parsing the string correctly, converting values to decimal and calculating them with the operator.

Using the Code

Using the code is pretty simple.

For basic use, developers should call the calculate method by passing the formula.

MathFunctions.MathParser mp = new MathFunctions.MathParser();
decimal result = mp.Calculate("5/(1-2)+(3+(2/1))");

For parametric use, developers should declare parameters before calling the calculate method, then call the method passing the formula as seen below:

MathFunctions.MathParser mp = new MathFunctions.MathParser();
mp.Parameters.Add(MathFunctions.Parameters.A, 5);
mp.Parameters.Add(MathFunctions.Parameters.B, 2);
mp.Parameters.Add(MathFunctions.Parameters.C, 1);
mp.Parameters.Add(MathFunctions.Parameters.D, 3);
decimal result = mp.Calculate("3D-2B/C+(A-B)");

History

• 20.01.2007: Initial release
  For bug reports and suggestions, feel free to contact me at oztamer@hotmail.com.

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)