访问孩子的静态属性在父类的方法 [英] Accessing a static property of a child in a parent method

问题描述

说我有下面的代码：

class Parent
{

    static string MyField = "ParentField";

    public virtual string DoSomething()
    {
        return MyField;
    }
}

class Child : Parent
{
    static new string MyField = "ChildField";
}

现在我希望能够做以下两项操作：

Now I want to be able to do both of the following:

Console.WriteLine(Parent.MyField);
Console.WriteLine(Child.MyField);

如预期的这些工作，但我也想做到这一点：

These work as expected, but I would also like to do this:

Child c = new Child();
Console.WriteLine(c.DoSomething());

由于DoSomething的（）没有针对儿童类中定义的，它是被返回的家长MyField的，但。我要的是孩子的MyField的

Since DoSomething() is not defined for the Child class, it's the Parent's MyField that gets returned, but what I want is the Child's MyField.

所以我的问题是：有没有什么办法可以做到这一点。

So my question is: Is there any way I can do this?

请注意：重写方法在子类中是一种选择，但因为我将有很多子类从父继承和方法应该做同样的在所有的人，在这种方法来改变的东西会带来不少麻烦。

NOTE: Overriding the method in the Child class is an option, but since I will have lots of Child classes inheriting from the Parent and the method is supposed to do the same in all of them, changing something in this method would bring a lot of trouble.

推荐答案

如果你发现自己需要不受语言支持的结构，在这种情况下静态虚拟成员，这是一个气味，说明你可能有一个设计缺陷。

If you find yourself requiring a construct not supported by the language, in this case static virtual members, that is a smell, indicating you might have a faulty design.

而不是向我们展示一个解决方案，向我们展示问题你正试图与解决方案来解决。我的猜测是，有一个完全不同的设计，消除了这一奇怪现象，需要

Instead of showing us a solution, show us the problem you are trying to solve with that solution. My guess is that there is a totally different design that eliminates the need for this oddity.

换句话说：你接受的答案是不是你想要的因为你问的问题是不是真的，你应该问的问题。我能想到的任何情况下所提出的设计提供了好处，另一种更常规的设计没有。

Put another way: the answers you've received aren't the ones you want because the question you asked is not really the question you should be asking. I can think of no situation where the proposed design offers benefits that another, more conventional design does not.

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