using System;
using System.Globalization;
using System.Linq;
using System.Threading;
public class Program
{
public static void Main()
//Thread.CurrentThread.CurrentCulture = Thread.CurrentThread.CurrentUICulture = CultureInfo.CreateSpecificCulture("sv-SE");
var sortThis = new[] { "VatNumber", "VisiAvtalsnummerCompanies", "WinZipPassword" }
//var sortThis = new[] { "Å", "Ä", "Ö", "O", "U" }
.OrderBy(s => s, StringComparer.CurrentCultureIgnoreCase)
.ToList();
foreach(var s in sortThis)
Console.WriteLine(s);
}