C#: static Guid as argument of an attribute
-
22-07-2019 - |
Question
How can I use a static Guid as argument in an attribute?
static class X
{
public static readonly Guid XyId = new Guid("---");
}
[MyAttribute(X.XyId)] // does not work
public class myClass
{
}
It does not work because Guid must be readonly, it can not be const. The string and byte[] representation would also be readonly.
Is there any workaround for this?
Solution
It's not possible and will never be possible, because [Attributes]
are compiled as metadata and static
variables are initialized at runtime, and of course the former cannot access the latter (except via Reflection).
If the standard
public const string MyGuid = "blah";
won't work for you, then AFAIK the only way to achieve what you want, is with Reflection.
OTHER TIPS
Unfortunately there is no a good way to pass Guid to attribute. Only workaround would be to use another type for that and convert it to Guid.
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