由于其保护级别而无法访问？

本文介绍了由于其保护级别而无法访问？的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

总体来说，我对编码还是很陌生的，尽管这个简单的程序仅是用来测试构造函数的工作方式，但我仍然想知道为什么会出现此错误。

I'm still quite new to coding in general, and while this simple program is only meant to be a test to learn how constructors work, I'd still like to know why I'm getting this error.

using System; public class methodTest { int a; int b; int c; public methodTest(int i, int j, int k) { a = i; b = j; c = k; } } public class methodObj { static void Main() { methodTest obj = new methodTest(10, 20, 30); Console.WriteLine("obj = " + obj.b); Console.ReadKey(); } }

我不确定我为什么会得到错误。问题出在Console.WriteLine上，它指出它无法访问obj.b。变量似乎是在公共类中声明的，那么为什么不能访问它们呢？我试图寻找解决方案，但是我发现的所有问题都让我很困惑，无法获得可以转化为我自己的理解的答案。 感谢所有帮助！

I'm not entirely sure why I'm getting the error. The problem is with the Console.WriteLine, where it states it cannot access obj.b. The variables seem to be declared within a public class, so why can they not be accessed? I tried searching for a solution to this, but all the questions I found were much too convoluted for me to get an answer I could translate to my own understanding. All help appreciated!

推荐答案

即使变量在公共类中，也必须将它们声明为公共，因为默认情况下它们是私有的。

Even though the variables are in a public class, they must be declared as public as they are private by default.

请参阅：访问修饰符

类成员，包括嵌套的类和结构，可以是公共的，受保护的是内部的，受保护的，内部的或私有的。 类成员和结构成员（包括嵌套类和结构）的访问级别默认情况下为私有。

最佳做法是使用大写名称和属性表示公共变量。

It is best practice to use capitalized names and properties for public variables.

public A { get; set; }

属性可让您控制成员的读/写访问，并添加逻辑读取或设置它们时。

Properties allow you to control the access of reading/writing of the member, as well as adding logic when they are read or set.