检查一个类型实现一个通用接口不考虑泛型类型参数 [英] Check if a type implements a generic interface without considering the generic type arguments

问题描述

我有一个接口

public interface MyInterface<TKey, TValue>
{
}

实现是不相关的。现在我要检查，如果给定的类型是接口的实现。此法

Implementations are irrelevant. Now I want to check if a given type is an implementation of that interface. This method fails for

public class MyClass : MyInterface<int, string>
{
}

但我不知道该怎么做检查

But I don't know how to do the check.

public void CheckIfTypeImplementsInterface(Type type)
{
    var result1 = typeof(MyInterface<,>).IsAssignableFrom(type); --> false
    var result2 = typeof(MyInterface<int,string>).IsAssignableFrom(type); --> true
}

我有什么对RESULT1做的是真的吗？

What do I have to do for result1 to be true?

推荐答案

据我所知，要做到这一点的唯一方法是让所有的接口，看看一般定义所需的接口类型相匹配

As far as I know, the only way to do this is to get all interfaces and see if the generic definition matches the required interface type.

bool result1 = type.GetInterfaces()
    .Where(i => i.IsGenericType)
    .Select(i => i.GetGenericTypeDefinition())
    .Contains(typeof(MyInterface<,>));

编辑：乔恩在评论中指出的那样，你也可以这样做：

As Jon points out in the comments, you could also do:

bool result1 = type.GetInterfaces()
    .Where(i => i.IsGenericType)
    .Any(i => i.GetGenericTypeDefinition() == typeof(MyInterface<,>));

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