Question

Is there a way to calculate the result of a string expression, for example
mystring = "2*a+32-Math.Sin(6)" dynamically knowing that a is a variable that I have, may be there is some dynamic solution or using System.Reflection

string mystring = "2*a+32-Math.Sin(6)"`;
decimal result = SomeMethod(mystring,3); // where a = 3 for example

Answer 1

How about making javascript calculate your expression?

Type scriptType = Type.GetTypeFromCLSID(Guid.Parse("0E59F1D5-1FBE-11D0-8FF2-00A0D10038BC"));

dynamic obj = Activator.CreateInstance(scriptType, false);
obj.Language = "javascript";

var res = obj.Eval("a=3; 2*a+32-Math.sin(6)");