Idea: fullnameof()

[janniksam]

I like the nameof() functionality that was implemented a few versions ago.

I would love to have a similar functionality for full namespace:

An example:
[ServiceInterface(Name = nameof(IServiceInterface), ConfigurationName = "Foo.Bar.Test.IServiceInterface")]
public interface IAsyncServiceInterface : IServiceInterface

Could look like this:
[ServiceInterface(Name = nameof(IServiceInterface), ConfigurationName = namespaceof(IServiceInterface))]
public interface IAsyncServiceInterface : IServiceInterface

What you guys think about it?

[Unknown6656]

The namespace of a type abc.def.ghi is usually abc.def (leaving aside the possiblity of nested types). To retrieve this string, one usually uses typeof(....).Namespace or .....GetType().Namespace.

To retrieve the fully qualified type name, one uses typeof(....).FullName or .....GetType().FullName.
This -- as far as I understood your aim correctly -- is the string you are interested in.

What exactly are you proposing? A compile-time constant resolution of the Properties Type.Namespace and Type.FullName?
What are real-world applications of this feature? (considering that compile-time "constant" instances of System.Type are allowed to be passed to attributes)

[svick]

If you actually want the full name of the type, not just the namespace, then I think this is a duplicate of #701.

[alrz]

one usually uses typeof(....).Namespace

I think there was a proposal to make those compile-time constants so you can use it in attributes (or any const context).

[janniksam]

Yes, I am sorry, you guys are right. it IS a duplicate of #701 :)

[svick]

@alrz I think you're talking about dotnet/roslyn#10972.

[jnm2]

@janniksam Could you close this one please since you've linked to the original?

[333fred]

Closing as a duplicate.

[jnm2]

This would be addressed by a proposal to make typeof(IServiceInterface).Namespace a constant, usable in the sample you gave. #8505