支持.net4.0版本

public class MyXmlFactory    {        private IDictionary
     
       objectDefine = new Dictionary
      
       ();        public MyXmlFactory(string fileName)        {            InstanceObjects(fileName);  // 实例IoC容器        }        /// 
       
        /// 实例IoC容器        /// 
        /// 
               private void InstanceObjects(string fileName)        {            XElement root = XElement.Load(fileName);            var objects = from obj in root.Elements("object") select obj;             objectDefine = objects.ToDictionary(                    k => k.Attribute("id").Value,                     v =>                     {                        string typeName = v.Attribute("type").Value;                          Type type = Type.GetType(typeName);                          return Activator.CreateInstance(type);                    }                );        }        /// 
       
        /// 获取对象        /// 
        /// 
               /// 
               public object GetObject(string id)        {            object result = null;            if (objectDefine.ContainsKey(id))            {                result = objectDefine[id];            }            return result;        }    }
      
     

xmL文件（Objects.xml）:

<objects>

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

</objects>

 调用：

MyXmlFactory ctx = new MyXmlFactory(@"Objects.xml"); Console.WriteLine(ctx.GetObject("PersonDao").ToString());