Simple Profiling Helper

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

namespace ProfilingHelper
{
    class Program
    {
        static void Main(string[] args)
        {
            var profile = new Profile();

            using (profile["All"])
            {
                for (int i = 0; i < 10; i++)
                {
                    using (profile["Part A"]) Thread.Sleep(10);

                    using (profile["Part B"]) Thread.Sleep(20);

                    using (profile["Part C"]) Thread.Sleep(5);
                }
            }
            Console.WriteLine(profile.StringResult());
            Console.ReadLine();
        }
    }

    public class Profile
    {
        Dictionary<string, Profiler> profilers = new Dictionary<string, Profiler>();
        public Profiler this[string index]
        {
            get
            {
                if (!profilers.ContainsKey(index)) profilers[index] = new Profiler();
                return profilers[index].Start();
            }
        }

        public Dictionary<string, int> Results()
        {
            return profilers.ToDictionary(x => x.Key, x => x.Value.ElapsedMS());
        }

        public string StringResult()
        {
            var results = Results().OrderByDescending(x => x.Value);

            var sb = new StringBuilder();

            foreach (var r in results)
                sb.Append(r.Key).Append(" = ").Append(r.Value).AppendLine("ms");
            return sb.ToString();
        }

    }

    public class Profiler : IDisposable
    {
        Stopwatch sw = new Stopwatch();
        public Profiler Start() { sw.Start(); return this; }
        public void Stop() { sw.Stop(); }

        public int ElapsedMS()
        {
            return (int)sw.ElapsedMilliseconds;
        }
        public void Dispose()
        {
            Stop();
        }
    }
}