[Solved] If C# attribute work like decorator design pattern?


You cannot compare these two things. Attributes are used to be accessed via reflection. They don’t change behaviour magically. You might probably (ab)use attributes to implement some kind of weird decorator design pattern. But just because an Attribute “decorates” e.g. a member, class, method or something, it has nothing to do with the decorator design pattern!

solved If C# attribute work like decorator design pattern?