仅在特定类型上允许自定义属性 [英] Allow a custom Attribute only on specific type

问题描述

有没有办法强制编译器将自定义属性的使用限制为仅用于特定的 property 类型，如 int、short、string(所有原始类型)?
类似于 AttributeUsageAttribute 的 ValidOn-AttributeTargets 枚举.

Is there a way to force the compiler to restrict the usage of a custom attribute to be used only on specific property types like int, short, string (all the primitive types)?
similar to the AttributeUsageAttribute's ValidOn-AttributeTargets enumeration.

推荐答案

不，你不能，基本上.您可以将其限制为 struct vs class vs interface，仅此而已.另外:无论如何，您都不能向代码之外的类型添加属性(通过 TypeDescriptor 除外，这不一样).

No, you can't, basically. You can limit it to struct vs class vs interface, that is about it. Plus: you can't add attributes to types outside your code anyway (except for via TypeDescriptor, which isn't the same).

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