public static void Main()
{
string[] cultureNames = { "en-GB", "en-US", "fr-FR", "ru-RU" };
Random rnd = new Random();
string cultureName = cultureNames[rnd.Next(0, cultureNames.Length)];
Thread.CurrentThread.CurrentUICulture = CultureInfo.CreateSpecificCulture(cultureName);
Console.WriteLine("The current UI culture is {0}",
Thread.CurrentThread.CurrentUICulture.Name);
StringLibrary strLib = new StringLibrary();
string greeting = strLib.GetGreeting();
Console.WriteLine(greeting);
}