C# 动态加载Dll接口

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace MyFrist
{
    interface Test
    {
        int Add(int a, int b);
    }
    class Hei : Test
    {

        public int Add(int a, int b)
        {
            try
            {
                return a + b;
            }
            catch (Exception ex)
            {
                return 0;
            }
        }
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ConsoleDll
{
    class Program
    {
        static void Main(string[] args)
        {
            string dllPath = AppDomain.CurrentDomain.BaseDirectory + "MyFrist.dll";
            var resource = System.Reflection.Assembly.LoadFrom(dllPath);
            foreach (var _every in resource.GetTypes())
            {
                if (_every.GetInterface("Test") != null)
                {
                    var plugin = Activator.CreateInstance(_every);
                    object[] paramertors = new object[] { 500, 2 };//参数集合
                    var temp=_every.GetMethod("Add");
                    object result=temp.Invoke(plugin, paramertors);
                    Console.WriteLine(result);
                }
            }
        }
    }
}