2.自己搭建的一个简易的ioc容器

1.persondao类
namespace MyselfIoC
{
public class PersonDao
{
public override string ToString()
{
return "我是PersonDao";
}
}
}
2.xml 工厂文件
<?xml version="1.0" encoding="utf-8" ?>

<objects>

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

</objects>
3.工厂ioc 构造函数实例化一个ioc工厂的字典

namespace MyselfIoC
{
public class MyXmlFactory
{
private IDictionary<string, object> objectDefine = new Dictionary<string, object>();

public MyXmlFactory(string fileName)
{

//构造函数实例IoC容器
InstanceObjects(fileName); // 实例IoC容器
}

/// <summary>
/// 实例IoC容器
/// </summary>
/// <param name="fileName"></param>
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);
}
);
}

/// <summary>
/// 获取对象
/// </summary>
/// <param name="id"></param>
/// <returns></returns>
public object GetObject(string id)
{
object result = null;

if (objectDefine.ContainsKey(id))
{

//通过字典获取对象的实例
result = objectDefine[id];
}

return result;
}
}
}

4.调用部分

namespace MyselfIoC
{
class Program
{
static void Main(string[] args)
{
AppRegistry();
Console.ReadLine();
}

static void AppRegistry()
{
MyXmlFactory ctx = new MyXmlFactory(@"D:\Objects.xml");
Console.WriteLine(ctx.GetObject("PersonDao").ToString());
}
}
}