如果它不是这种框架的主要目的,那么可以在运行时使用.NET AOP框架事件来实现。
如果你的方法不是虚拟的,我会积极研究一个可以处理事件的新事件。
您可以采取NConcern .NET runtime AOP Framework
看看猴子补丁 “方面”:
public class MonkeyPatch : IAspect
{
static public void Patch(MethodInfo oldMethod, MethodInfo newMethod)
{
//update monkey patch dictionary
MonkeyPatch.m_Dictionary[oldMethod] = newMethod;
//release previous monkey patch for target method.
Aspect.Release<MonkeyPatch>(oldMethod);
//weave monkey patch for target method.
Aspect.Weave<MonkeyPatch>(oldMethod);
}
static private Dictionary<MethodInfo, MethodInfo> m_Dictionary = new Dictionary<MethodInfo, MethodInfo>();
public IEnumerable<IAdvice> Advise(MethodInfo method)
{
if (MonkeyPatch.m_Dictionary.ContainsKey(_Method))
{
yield return Advice(MonkeyPatch.m_Dictionary[_Method]);
}
}
}
补丁:
static public void main(string[] args)
{
//create Boo2, a dynamic method with Boo signature.
var boo2 = new DynamicMethod("Boo2", typeof(void), new Type[] { typeof(Foo) }, typeof(Foo), true);
var body = boo2.GetILGenerator();
//Fill your ILGenerator...
body.Emit(OpCodes.Ret);
//Apply the patch
MonkeyPatch.Patch(typeof(Foo).GetMethod("Boo"), boo2);
}
在第二另一方面,如果你只需要调用的东西原来的电话后,你是在AOP的目标,你可以这样做...
观察看点:
public class Observation : IAspect
{
static public void Observe(MethodInfo method, Action action)
{
//update observation dictionary
Observation.m_Dictionary[method] = action;
//release observation aspect for target method
Aspect.Release<Observation>(method);
//weave observation aspect for target method.
Aspect.Weave<Observation>(method);
}
static private Dictionary<MethodInfo, Action> m_Dictionary = new Dictionary<MethodInfo, Action>;
public IEnumerable<IAdvice> Advice(MethodInfo method)
{
if (Observation.m_Dictionary.ContainsKey(method))
{
yield return Advice.Basic.After(Observation.m_Dictionary[method]);
}
}
}
使用案例:
static public void main(string[] args)
{
Observation.Observe(typeof(Foo).GetMethod("Boo"),() => { /* paste here your notification code... */ });
}
是否可以更改为'保护virtual'嘘的签名? – PMF
你能解释你为什么这样做吗?我觉得有一个更好的办法... – James
@PMF最终是的 - 它可以将Boo的签名更改为'受保护的虚拟',但是我实际上正在寻找解决方案,以便不会触摸原始码。 –