C#动态创建类和使用特性增强程序可扩展性

IPeople

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

namespace ClassLibrary1
{
    public interface IPeople
    {
        void Say();
    }
}

MyAttribute

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

namespace ClassLibrary1
{
   
    [AttributeUsage(AttributeTargets.Class, AllowMultiple = false, Inherited = false)]
    public class MyAttribute : Attribute
    {
        private string name;
        public MyAttribute(string name)
        {
            this.Name = name;
        }

        public string Name
        {
            get
            {
                return name;
            }

            set
            {
                name = value;
            }
        }
    }
}

Woman

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

namespace ClassLibrary1
{
    [MyAttribute("女人努力花钱")]
    public class Woman : IPeople
    {
        public void Say()
        {
            Console.WriteLine("WomanSay");
        }
    }
}

Man

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

namespace ClassLibrary1
{
    [MyAttribute("男人努力赚钱")]
    public class Man : IPeople
    {
        public void Say()
        {
            Console.WriteLine("Man Say");
        }
    }
}

Program

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Reflection;
using ClassLibrary1;
using System.Runtime.Remoting;

namespace ConsoleApplication46
{
    class Program
    {
        static void Main(string[] args)
        {
            ObjectHandle p = Activator.CreateInstance("ClassLibrary1", string.Format("ClassLibrary1.{0}", "Man"));
            object ps = p.Unwrap();
            foreach (var item in ps.GetType().GetInterfaces())
            {
                Console.WriteLine(item.Name);
            }
            foreach (object item in ps.GetType().GetCustomAttributes(false))
            {
                MyAttribute my = item as MyAttribute;
                if (my != null)
                {
                    Console.WriteLine(my.Name);
                }
            }
            IPeople pe = (IPeople)ps;
            pe.Say();



            Console.ReadKey();
        }
    }
}

运行结果：

项目结构：