C＃属性的属性 [英] C# property attributes

问题描述

我看到下面的code：

I have seen the following code:

[DefaultValue(100)]
[Description("Some descriptive field here")]
public int MyProperty{...}

从上面的这段功能似乎很清楚的是，我不知道，我怎么可以用它做有益的事情。 IM甚至不知道以什么样的名字给它！

The functionality from the above snippit seems clear enough, I have no idea as to how I can use it to do useful things. Im not even sure as to what name to give it!

有谁知道在哪里可以找到更多的信息/关于这些属性的属性的教程？
我也有兴趣在任何新的/有用的任务，这个功能可以做的。

Does anyone know where I can find more information/a tutorial on these property attributes? I would be also interested in any novel / useful tasks this feature can do.

推荐答案

人们已经覆盖了UI方面 - 属性有其他用途，但...例如，它们被广泛在大多数的序列化框架中使用。
有些属性是由编译器给予特殊待遇 - 例如， [的PrincipalPermission（...）] 补充声明安全的方法，让你（自动）检查用户拥有合适的权限。

People have already covered the UI aspect - attributes have other uses, though... for example, they are used extensively in most serialization frameworks. Some attributes are given special treatment by the compiler - for example, [PrincipalPermission(...)] adds declarative security to a method, allowing you to (automatically) check that the user has suitable access.

要添加自己的特殊处理，可以使用 PostSharp ;有使用PostSharp做AOP的事情，比如记录了许多很好的例子 - 或者只是code简化，如用的自动 INotifyPropertyChanged的实施。

To add your own special handling, you can use PostSharp; there are many great examples of using PostSharp to do AOP things, like logging - or just code simplification, such as with automatic INotifyPropertyChanged implementation.

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