有关私人课程的详细解释吗？ [英] Any please explain detail about private class?

问题描述

只有嵌套类是私有的，或者我们是否在开始时作为私有类初始化并继续我们的程序???

详细解释我



我尝试了什么：



我见过很多例子，但我找不到确切的ans

only nested class is private or whether we initialize at start as private class and continue our program???
Explain me in detail

What I have tried:

I have seen many examples but I couldn't find exact ans

推荐答案

没有。如果您尝试将非嵌套类声明为private，protected或protected internal，则会出现编译器错误：

No. If you try to declare a non-nested class as private, protected, or protected internal you will get as compiler error:

Namespace elements cannot be explicitly declared as private, protected or protected internal

为什么？因为它不会提供有意义的保护级别。

私有意味着该成员只能在包含的类中访问 - 它不能在它之外使用。由于顶级类没有包含类，因此它不能有意义地保密。

如果类嵌套在现有类中，则只能将类声明为私有，然后嵌套类才可用在其包含的类中。

Why? Because it would provide no meaningful level of protection.
Private means that the member is only accessible in the containing class - it can't be used outside it. Since a top-level class has no containing class, it cannot meaningfully be private.
You can only declare a class as private if it is nested within an existing class, and then the nested class is only available within its containing class.

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