Tweak of http://pastebin.com/FPTtFsn7

gistfile1.cs

using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Linq.Expressions;
using System.Reflection;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApplication1
{
    public class FakeController
    {
        public Dictionary<string, Action<object>> delegates1;
        public Dictionary<string, Action<FakeController>> delegates2;

        public Dictionary<string, MethodInfo> methodInfos;

        public FakeController()
        {
            this.delegates1 = new Dictionary<string, Action<object>>();
            this.delegates2 = new Dictionary<string, Action<FakeController>>();
            this.methodInfos = new Dictionary<string, MethodInfo>();

            foreach (var mi in this.GetType().GetMethods(BindingFlags.Instance | BindingFlags.Public))
            {
                if (mi.DeclaringType == this.GetType())
                {
                    this.methodInfos.Add(mi.Name, mi);

                    this.delegates1.Add(mi.Name, this.CreateFoo1(mi));

                    this.delegates2.Add(mi.Name, this.CreateFoo2(mi));
                }
            }
        }

        public void Apa()
        {
            //Här händer inte mycket
        }

        private Action<object> CreateFoo1(MethodInfo m)
        {
            var objExpr = Expression.Parameter(typeof(object), "theItem");
            var castedObjExpr = Expression.Convert(objExpr, m.DeclaringType);

            return Expression.Lambda<Action<object>>(
                Expression.Call(castedObjExpr, m), new[] { objExpr }).Compile();
        }

        private Action<FakeController> CreateFoo2(MethodInfo m)
        {
            var objExpr = Expression.Parameter(m.DeclaringType, "theItem");

            return Expression.Lambda<Action<FakeController>>(
                Expression.Call(objExpr, m), new[] { objExpr }).Compile();
        }
    }

    class Program
    {
        static void Main(string[] args)
        {
            var o = new FakeController();

            //warmup
            for (var i = 0; i < 100; i++)
            {
                foreach (var m in o.methodInfos)
                {
                    m.Value.Invoke(o, new object[] { });
                }
                foreach (var m in o.delegates1)
                {
                    m.Value.Invoke(o);
                }
                foreach (var m in o.delegates2)
                {
                    m.Value.Invoke(o);
                }
            }

            //Time MethodInfo
            var t = Stopwatch.StartNew();
            for (int i = 0; i < 1000000; i++)
            {
                o.methodInfos["Apa"].Invoke(o, new object[] { });
            }
            t.Stop();
            Console.WriteLine("MethodInfo: " + t.Elapsed.TotalMilliseconds);


            //Time Delegates
            t.Restart();
            for (int i = 0; i < 1000000; i++)
            {
                o.delegates1["Apa"].Invoke(o);
            }
            t.Stop();
            Console.WriteLine("Delegate1: " + t.Elapsed.TotalMilliseconds);

            t.Restart();
            for (int i = 0; i < 1000000; i++)
            {
                o.delegates2["Apa"].Invoke(o);
            }
            t.Stop();
            Console.WriteLine("Delegate2: " + t.Elapsed.TotalMilliseconds);

            Console.WriteLine("Done...");
            Console.ReadLine();
        }
    }
}