属性的访问修饰符；为什么以下不起作用？
我遇到了一个编译器错误，这对我来说不太有意义。我有一个 internal 属性，我想限制它的 set 块，使其只能通过继承使用。我认为这会起作用：
internal bool MyProperty {
get { return someValue; }
protected internal set { someValue = value; }
}
但编译器说 set 块上的访问修饰符需要比 internal 更具限制性 - 我是否遗漏了某些内容，或者是 protected inside不比internal限制更多吗？
I've run into a compiler error that doesn't quite make sense to me. I have an internal property and I want to restrict its set block such that it is only available through inheritance. I thought this would work:
internal bool MyProperty {
get { return someValue; }
protected internal set { someValue = value; }
}
But the compiler says that the access modifier on the set block needs to be more restrictive than internal - am I missing something, or is protected internal not more restrictive than internal?
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受保护的内部限制较少；它是受保护的或内部（不是和） - 因此另外允许来自其他程序集的子类访问它。您需要反转：这将允许程序集中的代码以及其他程序集中的子类获取它（读取） - 但只有程序集中的代码可以设置它（写）。
protected internalis less restrictive; it is protected or internal (not and) - which therefore additionally allows subclasses from other assemblies to access it. You would need to invert:This will allow code in your assembly, plus subclasses from other assemblies, get it (read) - but only code in your assembly can set it (write).
来自 C# 中访问修饰符的文档：
为了达到预期的效果，您需要交换访问修饰符，如下所示：
From the documentation on Access Modifiers in C#:
To achieve the desired effect, you instead need to swap the access modifiers, like so:
不，这是两者的并集，而不是交集；因此，受保护的内部限制比这两个单独的限制要少。交集不是 C# 的功能； CLR 确实支持“Family AND Assembly”，但 C# 只支持“Family OR Assembly”。
No, it's the union of the two, not the intersection; hence
protected internalis less restrictive than both of those individually. The intersection isn't a feature of C#; the CLR does support "Family AND Assembly", but C# only supports "Family OR Assembly".在这里，
受保护的内部比内部限制更少。受保护的内部- 当前程序集以及在其他程序集中继承此类型的任何类型的公共。internal- 此程序集公共，其他程序集私有Here,
protected internalis less restrictive thatinternal.protected internal- public for current assembly and any type that inherits this type in other assemblies.internal- public for this assembly and private for other assemblies