有没有一种方法可以创建支持接口的DynamicObject? [英] Is there a way to create a DynamicObject that supports an Interface?

问题描述

是否可以定义一个从DynamicObject派生并支持接口(ICanDoManyThings)的类，而无需在接口中实现每个方法?

Can I define a class which derives from DynamicObject and supports an interface (ICanDoManyThings) without having to implement each method in the interface?

我正在尝试创建一个动态代理对象，并希望通过MyProxyClass.TryInvokeMember的实现来处理此类的方法调用，该实现可以将也可以不将其传递给包装的对象.

I'm trying to make a dynamic proxy object, and want the method invocations on this class to be handled by the implementation of MyProxyClass.TryInvokeMember, which may or may not pass them on to a wrapped object.

这可能吗?

谢谢

推荐答案

ImpromptuInterface 确实做到了这一点可以与任何IDynamicMetaObjectProvider一起使用，包括DynamicObject子类和ExpandoObject.

ImpromptuInterface does exactly this and it works with ANY IDynamicMetaObjectProvider including DynamicObject subclasses and ExpandoObject.

using ImpromptuInterface;
using ImpromptuInterface.Dynamic;

public interface IMyInterface{

   string Prop1 { get;  }

    long Prop2 { get; }

    Guid Prop3 { get; }

    bool Meth1(int x);
}

...

//Dynamic Expando object
dynamic tNew = Build<ExpandoObject>.NewObject(
         Prop1: "Test",
         Prop2: 42L,
         Prop3: Guid.NewGuid(),
         Meth1: Return<bool>.Arguments<int>(it => it > 5)
);

IMyInterface tActsLike = Impromptu.ActLike<IMyInterface>(tNew);

Linfu实际上不会使用基于DLR的对象，而是使用它自己的幼稚的后期绑定，这给它带来了 SERIOUS 的性能成本. Clay确实使用了dlr，但是您必须坚持使用Clay对象，这些对象是为将所有行为注入到ClayObject中而设计的，这并不总是那么简单.

Linfu won't actually use DLR based objects and rather uses it's own naive late binding which gives it a SERIOUS performance cost. Clay does use the dlr but you have to stick with Clay objects which are designed for you to inject all behavior into a ClayObject which isn't always straightforward.

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