C#多重继承 [英] c# multiple inheritance

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本文介绍了C#多重继承的处理方法,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

我想在C#

(伪)

class A;

class B : A;

class C : A, B;

...

A ac = (A)c;

...

B bc = (B)c;



这可能吗?

Is this possible?

推荐答案

您并不需要多重继承在这种特殊情况下:如果类 C B ,类的任何实例 C 可以转换到两个 B A ;因为 B 已经从 A 派生ç不需要从 A衍生又说:

You do not need multiple inheritance in this particular case: If class C inherits only from B, any instance of class C can be cast to both B and A; since B already derives from A, C doesn't need to be derived from A again:

class A      { ... }

class B : A  { ... }

class C : B  { ... }

...

C c = new C();
B bc = (B)c;    // <-- will work just fine without multiple inheritance
A ac = (A)c;    // <-- ditto



(正如其他人已经说过,如果你需要一个类似于多继承,使用接口,因为一个类可以实现尽可能多的,只要你想的。)

(As others have already said, if you need something akin to multiple inheritance, use interfaces, since a class can implement as many of those as you want.)

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