Visual Studio 2022 New Class Code Template Using File Scoped Namespace?

Question

I want VS to generate new classes using the new way of declaring namespaces, ie:

namespace A.Namespace.For.Class;
public class ANewClass
{
}

But my VS2022 still uses the old way, ie:

namespace A.Namespace.For.Class
{
    public class ANewClass
    {
    }
}

So I tried to change the template file located at C:\Program Files\Microsoft Visual Studio\2022\Professional\Common7\IDE\ItemTemplates\CSharp\Code\1033\Class\Class.cs

I changed it to the below:

namespace $rootnamespace$;
public class $safeitemrootname$
{
}

But it looks like VS2022 can't interpret the semicolon after the namespace's name because it still uses the old style. But as soon as I remove the semicolon, VS starts to use the new style except that I now have to manually add that semicolon myself.

Anyone knows how to escape that semicolon in that code template file? No documentation seems to be available.

@T.S. Maybe you can give me some more details on it? We have 20 projects so didn't look into project settings. — Antediluvian
– Antediluvian, Commented Nov 10, 2022 at 3:45
Never mind. I was thinking about <ImplicitUsings>enable</ImplicitUsings> . I've never seen using { namespace{..} } — T.S.
– T.S., Commented Nov 10, 2022 at 4:43

shingo · Accepted Answer · 2022-11-10 04:58:56Z

17

You don't have to change the template, this is configurable, go to

Options > Text Editor > C# > Code Style > General

In Code block preferences section, change Namespace declarations to File scoped.

answered Nov 10, 2022 at 4:58

shingo

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2 Comments

Antediluvian Over a year ago

Fantastic. That saves my life. Thank you!

Juan Zamudio Mar 13 at 17:53

I edited .editorconfig to use file scoped in one of my solutions, in this solution when I added a class VS add the semicolon to the namespace, in my other solutions it keep working as always, but since I updated to 17.13 it always add brackets in the namesace, I dont want to change the configuration of VS everytime I open a solution with a different configuration

Gaspar Nagy · Accepted Answer · 2023-03-28 09:34:02Z

1

The answer of @shingo is the best, I think, but it is worth mentioning, that you can achieve the same by modifying the template (as you did) plus disable the auto formatting (back to block-scoped namespace) in the .editorconfig file. (Source: https://blog.jdriven.com/2022/12/changing_visual_studio_cs_templates/)

[*.cs]
csharp_style_namespace_declarations=file_scoped:suggestion

answered Mar 28, 2023 at 9:34

Gaspar Nagy

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