Question

I have this Js functions :

function Add (a, b)
{  return a+b;}

function Substract (a, b)
{  return a-b;}

I know (heard) that I can activate those functions on c# code using the dynamic keyword.

Can I get a help ( or beginning of help) to the solution by simple sample ?

edit

If I have a webBrowser ( winform) – which can help me. ( sorry to add this now).

Answer 1

You need a javascript interpreter if you want to execute javascript code. The C#s dynamic keyword is pretty useless in this aspect. You may take a look at Javascript .NET or Jint if you are trying to execute those functions in .NET code.

Here’s an example with Jint:

using System;
using Jint;

class Program
{
    static void Main()
    {
        var script = @"
function Add(a, b) {  
    return a + b;
}

function Substract(a, b) {  
    return a - b;
}

return Add(a, b);
";
        var result = new JintEngine()
            .SetParameter("a", 3)
            .SetParameter("b", 5)
            .Run(script);

        Console.WriteLine("result: {0}", result);
    }
}

Remark: what you have is not valid javascript. The var keyword cannot be used before function parameters. So you probably should start by fixing your code.