Culture Codes (in .NET and different OSes)

I tried to search for that info everywhere on the web for a full list. But unless iterating through the data, I wrote my own script. There are still more languages, like the InvariantCulture. In my opinion, this is more like a setting than a real user locale. I also understood the NeutralCultures wrong, because what they meant by that were the overarching category of languages that are used multiple times. Like „aa“ for Afar, but normally you would use for example aa-ET (Afar for Ethiopia) or the Invariant type.

using System.Globalization;

CultureInfo[] cultureInfos = CultureInfo.GetCultures(CultureTypes.AllCultures);

foreach (CultureInfo cultureInfo in cultureInfos)
{
    Console.Write($"{cultureInfo.Name}");
    if (cultureInfo.Name.Length < 8) Console.Write("\t"); // Align output for better readability
    Console.WriteLine($"\t { cultureInfo.DisplayName} ");
}

For the people who just need the info. This is the current output with .NET 9. I have run it on Windows 11 and macOS 15.5:

Definitely something I will spend a bit more time, since my last blog post was quite a journey, with all these cultures settings. You can still add a Culture by hand creating a new one. I will create a Repo on Github, but I wanted also to add a comparison algorithm and code generator for my website here, so that I could easily update everything on demand.

As a side note I know there is the ISO for the country codes, and you can also query them in C#, but I have not yet looked into it, if for example Windows 11 is capable of all „ISO“ cultures/country codes. For the curious people, here is the link: https://en.wikipedia.org/wiki/List_of_ISO_3166_country_codes