using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Xml;

using System.Xml.Linq;

using System.Reflection;

namespace TestIOC

{

   public class IocFactory

    {

       private string _path;

       private Dictionary<string, object> dict = new Dictionary<string, object>();

       public IocFactory(string path)

       { 

            this._path=path;

       }

       public object GetObject(string id)

       {

           XElement xe = XElement.Load(_path);

           var v = from c in xe.Elements("object") select c;

           dict = v.ToDictionary(k => k.Attribute("id").Value,

               s => {

                   string type = s.Attribute("type").Value;

                   Type ty = Type.GetType(type);

                  return Activator.CreateInstance(ty);

               }

               );

           return null;

       }

    }

}

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

namespace TestIOC

{

   public class PersonDao

    {

       public PersonDao()

       {

           Console.WriteLine(" this is PersonDao");

       }

       public PersonDao(string name)

       {

           Console.WriteLine(" this is PersonDao:"+name);

       }

    }

}

<?xml version="1.0" encoding="utf-8" ?>

<objects>

  <object id="PersonDao" type="TestIOC.PersonDao, TestIOC" />

</objects>

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Reflection;

namespace TestIOC

{

    class Program

    {

        static void Main(string[] args)

        {

            string path = @"F:\Q\mytest\spring\TestIOC\TestIOC\object.xml";

            IocFactory ioc = new IocFactory(path);

            PersonDao pd = ioc.GetObject("PersonDao") as PersonDao;

            Console.WriteLine("直接映射");

            Activator.CreateInstance(Type.GetType("TestIOC.PersonDao"));

            Console.ReadLine();

        }

    }

}