get list of regions of catalonia in csharp

You can get the list of regions of Catalonia in C# by utilizing the System.Globalization namespace.

Here is a sample code that retrieves a list of region names:

main.cs
using System;
using System.Globalization;
using System.Linq;

namespace ConsoleApp1
{
    class Program
    {
        static void Main(string[] args)
        {
            var catalanCulture = new CultureInfo("ca-ES");
            var regions = RegionInfo.GetCultures(CultureTypes.AllCultures)
                    .Where(ci => ci.Name.EndsWith("-" + catalanCulture.Name, StringComparison.OrdinalIgnoreCase))
                    .Select(ci => new RegionInfo(ci.LCID))
                    .GroupBy(ri => ri.Name)
                    .Select(g => g.First());

            foreach (var region in regions)
            {
                Console.WriteLine(region.Name);
            }
        }
    }
}
695 chars
25 lines

This code creates an instance of the CultureInfo class with the name "ca-ES" to represent the Catalan language and region. The code uses the RegionInfo.GetCultures method to retrieve all cultures, then filters the list to keep only those cultures that end with the Catalan culture name. The code converts each matching culture to a RegionInfo instance to get more information about that region, then groups the regions by name and selects only the first region in each group. Finally, the code iterates through the resulting list of regions and writes the names to the console.