C# - Formulovanie matematickych operacii pomocou string

string code = "Math.Pow(23 + 48, 2) - (7.76 * 3.14)";
string result = Eval.StringEval(code);
Console.WriteLine("Results: " + result);

Eval Class
--------------------
using System;
using System.Collections.Generic;
using System.Reflection;
using System.Text;
using System.CodeDom;
using System.CodeDom.Compiler;

public static class Eval
{
private static string funcprefix = "using System;\r\n"
+ "public delegate void Proc();\r\n"
+ "public class Wrapper { \r\n"
+ " public static object Set(string name, object value) { \r\n"
+ " AppDomain.CurrentDomain.SetData(name, value);\r\n"
+ " return value; \r\n"
+ " }\r\n"
+ " public static object Get(string name) { \r\n"
+ " return AppDomain.CurrentDomain.GetData(name);\r\n"
+ " }\r\n"
+ " public static object Invoke(Proc proc) { \r\n"
+ " proc();\r\n"
+ " return null; \r\n"
+ " }\r\n"
+ " public static object Eval() { return \r\n";
static string funcsuffix = "; \r\n} }";
public static string StringEval(string expr)
{
string program = funcprefix + expr + funcsuffix;
CompilerParameters cp = new CompilerParameters();
cp.GenerateExecutable = false;
cp.GenerateInMemory = true;

CompilerResults results =
CodeDomProvider.CreateProvider("C#").CompileAssemb lyFromSource(cp, new
string[]{program});
if ( results.Errors.HasErrors )
{
if ( results.Errors[0].ErrorNumber == "CS0029" )
return StringEval("Invoke(delegate { " + expr + "; })");
throw new Exception(results.Errors[0].ErrorText);
}
else
{
Assembly assm = results.CompiledAssembly;
Type target = assm.GetType("Wrapper");
MethodInfo method = target.GetMethod("Eval");
object result = method.Invoke(null, null);
return result == null ? null : result.ToString();
}
}
}

 string code = "Test(Math.Pow(23 + 48, 2) - (7.76 * 3.14))";

public static string StringEval(string expr)
   {
      
      string program = funcprefix + expr + funcsuffix;
      CompilerParameters cp = new CompilerParameters();
      cp.ReferencedAssemblies.Add("MyMathLib.dll");
      cp.GenerateExecutable = false;
      cp.GenerateInMemory = true;

      CompilerResults results = CodeDomProvider.CreateProvider("C#").CompileAssemblyFromSource(cp, new
      string[] { program });
      if (results.Errors.HasErrors)
      {
         if (results.Errors[0].ErrorNumber == "CS0029")
            return StringEval("Invoke(delegate { " + expr + "; })");
         throw new Exception(results.Errors[0].ErrorText);
      }
      else
      {
         Assembly assm = results.CompiledAssembly;
         Type target = assm.GetType("Wrapper");
         MethodInfo method = target.GetMethod("Eval");
         object result = method.Invoke(null, null);
         return result == null ? null : result.ToString();
      }
   }

string code = "MyMathLib.MyMathFunctions.TestFunction(Math.Pow(23 + 48, 2) - (7.76 * 3.14))";
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