using System;

using System.Globalization;

using System.Linq;

public class Program

{

    public static void Main()

    {

        var names=  CultureInfo

                .GetCultures(CultureTypes.AllCultures & ~CultureTypes.NeutralCultures).Select(p=>$"{p.Name.PadRight(15)} | {new RegionInfo(p.Name).DisplayName}");

        Console.WriteLine("CountryCode     | Country Name");            

        Console.WriteLine("                |             ");        

        Console.WriteLine(string.Join(Environment.NewLine,names));

​

    }

}