如何使用反射访问内部类 [英] How to access internal class using Reflection

问题描述

如何访问程序集的内部类?假设我想访问 System.ComponentModel.Design.DesignerHost.这里的 DesignerHost 是一个内部的密封类.

How can I access an internal class of an assembly? Say I want to access System.ComponentModel.Design.DesignerHost. Here the DesignerHost is an internal and sealed class.

如何编写代码来加载程序集和类型?

How can I write a code to load the assembly and the type?.

推荐答案

一般来说，你不应该这样做 - 如果一个类型被标记为内部，这意味着你不应该这样做从程序集外部使用它.它可以在以后的版本中删除、更改等.

In general, you shouldn't do this - if a type has been marked internal, that means you're not meant to use it from outside the assembly. It could be removed, changed etc in a later version.

但是，反射确实允许您访问非公开的类型和成员 - 只需查找采用 BindingFlags 参数并包含 BindingFlags 的重载.NonPublic 在您传递的标志中.

However, reflection does allow you to access types and members which aren't public - just look for overloads which take a BindingFlags argument, and include BindingFlags.NonPublic in the flags that you pass.

如果您有类型的完全限定名称(包括程序集信息)，则只需调用 Type.GetType(string) 应该可以工作.如果您事先知道程序集，并且知道该程序集中的公共类型，那么使用 typeof(TheOtherType).Assembly 获取程序集引用通常更简单，那么您可以调用 Assembly.GetType(string).

If you have the fully qualified name of the type (including the assembly information) then just calling Type.GetType(string) should work. If you know the assembly in advance, and know of a public type within that assembly, then using typeof(TheOtherType).Assembly to get the assembly reference is generally simpler, then you can call Assembly.GetType(string).

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