Math.Pow is cool and there is no way to have a Func of void.

What follows is a refactoring of the second controller here. Notice that I had to use Action and that I made Raiser much simplier. I read of Math.Pow today in: C# 4.0 in a Nutshell

using System;
namespace DelegateExample.Controllers
{
   public class CalculationController : BaseController
   {
      private string thirdValue;
      
      public RenderJsonResult Go(string act, string one, string two)
      {
         Int32 firstInteger = Convert.ToInt32(one);
         Int32 secondInteger = Convert.ToInt32(two);
         Action mathDelegate;
         switch(act)
         {
            case "add":
               mathDelegate = () => Adder(firstInteger, secondInteger);
               break;
            case "multiply":
               mathDelegate = () => Multiplier(firstInteger, secondInteger);
               break;
            case "power":
               mathDelegate = () => Raiser(firstInteger, secondInteger);
               break;
            default:
               mathDelegate = () => StatusQuoSustainer(firstInteger);
               break;
         }
         mathDelegate();
         var result = new { calulation = thirdValue };
         return RenderJson(result);
      }
      
      private void Adder(Int32 firstInteger, Int32 secondInteger)
      {
         thirdValue = (firstInteger + secondInteger).ToString();
      }
      
      private void Multiplier(Int32 firstInteger, Int32 secondInteger)
      {
         thirdValue = (firstInteger * secondInteger).ToString();
      }
      
      private void Raiser(Int32 firstInteger, Int32 secondInteger)
      {
         thirdValue = Math.Pow(firstInteger,secondInteger).ToString();
      }
      
      private void StatusQuoSustainer(Int32 loneInteger)
      {
         thirdValue = loneInteger.ToString();
      }
   }
}