Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
814 views
in Technique[技术] by (71.8m points)

.net - Does the order of attributes have any guarantees?

If multiple attributes are applied to a member, e.g.

[Foo]
[Bar]
void Baz() { ... }

Then are any guarantees made by the CLR/.NET specifications as to what order they will be retrieved in when retrieved by reflection (e.g. Attribute.GetCustomAttributes)? The documentation for these methods does not make it explicit, and while it does seem to be the case that they are returned in the order they are applied, I don't want to rely on undocumented behaviour as that's just asking for trouble.

As for why this might be important, imagine the attributes are used to indicate that the method should have a series of interceptors, which should run in a specific order.

See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Reply

0 votes
by (71.8m points)

No from 17.2 Attribute specification it does not seems so.

The order in which attributes are specified in such a list, and the order in which sections attached to the same program entity are arranged, is not significant. For instance, the attribute specifications [A][B], [B][A], [A, B], and [B, A] are equivalent.


与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
OGeek|极客中国-欢迎来到极客的世界,一个免费开放的程序员编程交流平台!开放,进步,分享!让技术改变生活,让极客改变未来! Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...