实现了类方法的MethodInfo，如何获取接口方法的MethodInfo? [英] How to get MethodInfo of interface method, having implementing MethodInfo of class method?

问题描述

我有一个接口方法的MethodInfo和一个实现的类的Type界面.我想找到实现接口方法的类方法的MethodInfo.

I have a MethodInfo of an interface method and Type of a class that implements the interface. I want to find the MethodInfo of the class method that implements the interface method.

简单的method.GetBaseDefinition() 不适用于接口方法.按名称查找也不起作用，因为当显式实现接口方法时，它可以有任何名称(是的，在 C# 中不是).

The simple method.GetBaseDefinition() does not work with interface methods. Lookup by name won't work either, because when implementing interface method explicitly it can have any name (yes, not in C#).

那么，涵盖所有可能性的正确方法是什么?

So what is the correct way of doing that that covers all the possibilities?

推荐答案

好的，我找到了一种方法，使用 GetInterfaceMap.

OK, I found a way, using GetInterfaceMap.

var map = targetType.GetInterfaceMap(interfaceMethod.DeclaringType);
var index = Array.IndexOf(map.InterfaceMethods, interfaceMethod);

if (index == -1)
{
    //this should literally be impossible
}

return map.TargetMethods[index];

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