Would it be possible to add enhanced support for nameof for method parameter names?

[gafter]

@taori commented on Sat Dec 26 2015

Let's say we have a method signature like this:

public IActionResult SomeMethod(int someParameter)

which is a common case in mvc.

When you're rendering action links or $.ajax calls you will have to pass route values which have to match the name of the parameter (unless something changed which i am unaware of).

Let's say i am constructing a call like this:

$.ajax("url" : "@Url.Action("SomeMethod", new {someParameter : "+someJsValue+"})");

This might potentially break on refactoring unless you do careful checking or use workarounds to render the url (which i am doing currently).

This is why i thought it would be nice if roslyn offered the option of doing it like this:

$.ajax("url" : "@Url.Action("SomeMethod", new {nameof(SomeMethod.someParameter) : "+someJsValue+"})");

Since method calls usually provide parameter names of their declaration i figured the necessary information might already exist, to provide this feature.

Would this be an option?

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@alrz commented on Sat Dec 26 2015

Have you seen similar issues in MVC repo? like aspnet/Mvc/issues/2608 or aspnet/Mvc/issues/2015. I think you'd better open an issue there.

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@taori commented on Sat Dec 26 2015

Not yet no. I guessed the Roslyn team knows best about this while the use case scenario just belongs to mvc

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@ashmind commented on Fri Jan 01 2016

That is also useful for some DI registrations, e.g.:

class SomeRepository {
    public SomeRepository(string connectionString) {}
}

builder.RegisterType<SomeRepository>()
       .WithParameter("connectionString" /* needs nameof for ctor args */, connectionStringFromConfig)

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@jamesbascle commented on Wed Jul 13 2016

Have talked to a number of people about this recently. Seems like a highly desired feature. Seems folks expect

nameof(MyClass.MyMethod.MyParameter)

to work. So throwing my hat in for support on this. I specifically would like it for registering Castle interceptors with Autofac using the .WithParameter extension method on the ContainerBuilder.

[taori]

@gafter After realizing that someone asked to create language feature requests at chsarplang i created another ticket at #373 regarding nameof. what would you like me to do about that one?