public class LogAttribute : BeforeDecoratorAttribute 
{ 
public override void Process(object target, MethodBase method, object[] parameters) 
{ 
Trace.WriteLine(method.Name); 
} 
} 

public class ParameterCountAttribute : BeforeDecoratorAttribute 
{ 
public override void Process(object target, MethodBase method, object[] parameters) 
{ 
Trace.WriteLine(target.GetType().Name); 
} 
} 

public interface IBizObject 
{ 
/// 对对象功能的装饰采用“横切”而非传统的继承方式获得， 
/// 中间代理对象的构造是隐式，而且是由DecoratorInjector包装的， 
/// 从外部角度看，对象的扩展是在Meta信息部分扩展，而且有关的约 
/// 束定义在接口而非实体类层次。 
[Log] 
[ParameterCount] 
int GetValue(); 
} 

public class BizObject : IBizObject 
{ 
public int GetValue() { return 0; } 
} 

[TestMethod] 
public void Test() 
{ 
IBizObject obj = (IBizObject)DecoratorInjector.Create( 
new BizObject(), typeof(IBizObject)); 
int val = obj.GetValue(); 
Assert.AreEqual<int>(0, val); 
}