C# 通过反射调用对象得方法

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading.Tasks;
using System.Configuration;
using System.Reflection;

namespace GrammaDemo
{
    class Program
    {
        static void Main(string[] args)
        {

            string assemblyName = ConfigurationManager.AppSettings["AssemblyName"];
            string className = ConfigurationManager.AppSettings["ClassName"];
            string methodName= ConfigurationManager.AppSettings["MethodName"];

            Type t = Assembly.Load(assemblyName).GetType(className);
            Object obj = Activator.CreateInstance(t);
            MethodInfo method = t.GetMethod(methodName);
            method.Invoke(obj, null);

            Console.Read();


        }
    }


    public class Person
    {
        public string Name { get; set; }
        public int Age { get; set; }

        public void Eat()
        {
            Console.WriteLine("eat");
        }
    }

}

app.config