C＃中：什么是具有纯粹的公共属性点 [英] c#: what is the point in having a purely public property

问题描述

可能显示的文件：结果
的我应该使用公共属性和私有字段或对数据的公共字段？结果
的Property(with没有额外的处理）与公共领域

这是在具有类简单地得到，并设置一个成员变量

What is the point in having a property inside a class that simply get and sets a member variable?

什么实际的差异将在那里只是让变量公开？

What practical difference would be there to just making the variable public?

推荐答案

我觉得类似的问题曾多次被回答，但基本上它可以让你添加错误检查的/ etc验证你的财产不改变公共接口的选项。

I think similar questions have been answered on many occasions, but basically it gives you the option of adding error checking/etc validation to your property without changing the public interface.

还有一些好消息这里，下面的报价可能回答你的问题最好的：

There's also some good information here, the following quote probably answers your question best:

一个物业沟通的想法的我会向您提供一个值，或者从你接受的价值。这不是一个实现概念，它是一个接口的概念。一个字段，而另一方面，通讯的实现 - 它说：这种类型的在这个非常特殊的方式代表值。有没有封装，它的裸存储格式。这其中的道理字段不是接口部分的一部分 - 他们不属于那里，因为他们谈是如何实现的，而不是被取得的成就。

A property communicates the idea of "I will make a value available to you, or accept a value from you." It's not an implementation concept, it's an interface concept. A field, on the other hand, communicates the implementation - it says "this type represents a value in this very specific way". There's no encapsulation, it's the bare storage format. This is part of the reason fields aren't part of interfaces - they don't belong there, as they talk about how something is achieved rather than what is achieved.

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