C# Fast get property value

gistfile1.txt

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

namespace ConsoleApplication
{
    public class People
    {
        public string Name { get; set; }
        public int Age { get; set; }
    }
    class Program
    {
        static void Main(string[] args)
        {
            Directly();
            Reflection();
            Lambda();
            Delegate();
            Emit();
            Console.ReadKey();
        }
        private static void Reflection()
        {
            People people = new People { Name = "Wayne" };
            Type type = typeof(People);
            PropertyInfo property = type.GetProperty("Name");
            Stopwatch stopwatch = Stopwatch.StartNew();
            for (int i = 0; i < 10000000; i++)
            {
                object value = property.GetValue(people);
            }
            stopwatch.Stop();
            Console.WriteLine("Reflection: {0}ms", stopwatch.ElapsedMilliseconds);
        }
        private static void Directly()
        {
            People people = new People { Name = "Wayne" };
            Stopwatch stopwatch = Stopwatch.StartNew();
            for (int i = 0; i < 10000000; i++)
            {
                object value = people.Name;
            }
            stopwatch.Stop();
            Console.WriteLine("Directly: {0}ms", stopwatch.ElapsedMilliseconds);
        }

        private static void Lambda()
        {
            People people = new People { Name = "Wayne" };
            Type type = typeof(People);
            var parameter = Expression.Parameter(type, "m");//参数m
            PropertyInfo property = type.GetProperty("Name");
            Expression expProperty = Expression.Property(parameter, property.Name);//取参数的属性m.Name
            expProperty = Expression.Convert(expProperty, typeof(object));
            var propertyDelegateExpression = Expression.Lambda(expProperty, parameter);//变成表达式 m => m.Name
            var propertyDelegate = (Func<People, object>)propertyDelegateExpression.Compile();//编译成委托
            Stopwatch stopwatch = Stopwatch.StartNew();
            for (int i = 0; i < 10000000; i++)
            {
                object value = propertyDelegate.Invoke(people);
            }
            stopwatch.Stop();
            Console.WriteLine("Lambda:{0}ms", stopwatch.ElapsedMilliseconds);
        }
        private static void Delegate()
        {
            People people = new People { Name = "Wayne", Age = 1 };
            Type type = typeof(People);
            PropertyInfo property = type.GetProperty("Age");
            Func<People, int> memberGet = (Func<People, int>)System.Delegate.CreateDelegate(typeof(Func<People, int>), property.GetGetMethod());
            Stopwatch stopwatch = Stopwatch.StartNew();
            for (int i = 0; i < 10000000; i++)
            {
                object value = memberGet(people);
            }
            stopwatch.Stop();
            Console.WriteLine("Delegate: {0}ms", stopwatch.ElapsedMilliseconds);
        }
        private static void Emit()
        {
            People people = new People { Name = "Wayne" };
            Type type = typeof(People);
            var property = type.GetProperty("Name");
            DynamicMethod method = new DynamicMethod("GetPropertyValue", typeof(object), new Type[] { type }, true);
            ILGenerator il = method.GetILGenerator();
            il.Emit(OpCodes.Ldarg_0);
            il.Emit(OpCodes.Callvirt, property.GetGetMethod());
            
            if (property.PropertyType.IsValueType)
            {
                il.Emit(OpCodes.Box, property.PropertyType);
            }
            il.Emit(OpCodes.Ret);
            Func<People, object> fun = method.CreateDelegate(typeof(Func<People, object>)) as Func<People, object>;

            Stopwatch stopwatch = Stopwatch.StartNew();
            for (int i = 0; i < 10000000; i++)
            {
                object value = fun.Invoke(people);
            }
            stopwatch.Stop();
            Console.WriteLine("Emit:{0}ms", stopwatch.ElapsedMilliseconds);
        }
    }
}