获取实现某个接口的所有已注册对象的列表 [英] Get a list of all registered objects implementing a certain interface

问题描述

请考虑以下内容

builder.Register(c => new A());
builder.Register(c => new B());
builder.Register(c => new C());

B和C都是ISomeInterface.

我现在想获得所有实现ISomeInterface的注册对象的IEnumerable.

I would now like to get an IEnumerable of all registered objects that implement ISomeInterface.

如何在Autofac中完成此操作?

How can I accomplish this in Autofac?

推荐答案

只需尝试一下，就可以了，并且不依赖于生存期上下文:

Just tried this, works and does not depend on lifetime context:

改为使用Activator枚举类型

Enumerate types using Activator instead

var types = con.ComponentRegistry.Registrations
     .Where(r => typeof(ISomeInterface).IsAssignableFrom(r.Activator.LimitType))
     .Select(r => r.Activator.LimitType);

然后解决:

IEnumerable<ISomeInterface> lst = types.Select(t => con.Resolve(t) as ISomeInterface);

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