C＃数学计算器 [英] C# Math calculator

问题描述

可能显示的文件：结果
  是否有.NET字符串数学评估？

  <一href=\"http://stackoverflow.com/questions/2607798/converting-string-ex$p$pssion-to-integer-value-using-c\">Converting使用C＃结果字符串前pression为整数值
  <一href=\"http://stackoverflow.com/questions/1437964/best-and-shortest-way-to-evaluate-mathematical-ex$p$pssions\">Best和最短的方法来评估数学EX pressions 结果
   C＃评估串ldquo; 3 *（4 + 2）rdquo;的产量INT 18

Possible Duplicates:
Is there a string math evaluator in .NET?
Converting string expression to Integer Value using C#
Best and shortest way to evaluate mathematical expressions
c# evaluating string “3*(4+2)” yield int 18

有没有办法在比这里psented $ P $以不同的方式来计算数学EX pressions像（2-3 / 4 * 12）？

Is there a way to calculate math expressions like (2-3/4*12) in a different way than presented here?

<一个href=\"http://www.c-sharpcorner.com/uploadfile/mgold/$c$cdomcalculator08082005003253am/$c$cdomcalculator.aspx\">http://www.c-sharpcorner.com/uploadfile/mgold/$c$cdomcalculator08082005003253am/$c$cdomcalculator.aspx

推荐答案

DataTable中有一个的计算方法，使您可以这样写：

DataTable has a Compute method that allows you to write this:

var result = new DataTable().Compute("2-3/4*12", null);

请注意，这是仅限于简单的数学EX pressions。

Note that this is limited to simple math expressions.

其他选项，包括使用在DLR如IronPython和IronRuby的动态语言。退房这个帖子：

Other option consist in using a dynamic language in the DLR such as IronPython and IronRuby. Check-out this post:

var engine = new IronPython.Hosting.PythonEngine();
double result = pythonEngine.EvaluateAs<double>("2-3/4*12");

您还可以检查codePLEX 的 NCalc库。

You may also check the NCalc library on CodePlex.

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