c# - 接口(interface)中的公共(public)变量？

Question

我正在阅读 this , 并注意到问题中的第二点:

An another interviewer asked me what if you had a Public variable inside the interface, how would that be different than in Abstract Class? I insisted you can't have a public variable inside an interface. I didn't know what he wanted to hear but he wasn't satisfied either.

我阅读了答案，但似乎没有一个能澄清这一点，除了:

For .Net,

Your answer to The second interviewer is also the answer to the first one... Abstract classes can have implementation, AND state, interfaces cannot...

我认为面试官的回答是正确的，因为界面中不能有任何变量。我在这里有点困惑。有人可以澄清吗？我的问题是，为什么面试官会问这么奇怪(？)的问题？

Answer 1

所有接口(interface)成员都是隐式公开，这就是为什么您不能在接口(interface)中为属性或方法设置public。

interface C# - MSDN

Interface members are automatically public, and they can't include any access modifiers. Members also can't be static.

针对您的问题:

I think the answer to the interviewer was correct, as you cant have any variables inside the interface.

没有。您可以在界面中定义属性。像这样的东西:

interface ITest
{
    int MyProperty { get; set; }
}

public class TestClass : ITest
{
    public int MyProperty
    {
        get
        {
            throw new NotImplementedException();
        }
        set
        {
            throw new NotImplementedException();
        }
    }
}

编辑:

An another interviewer asked me what if you had a Public variable inside the interface, how would that be different than in Abstract Class?

可能面试官想看看你是否会说默认情况下接口(interface)中的所有成员都是公共(public)的，而在抽象类中你可以有私有(private)、 protected 、公共(public)成员等。