using System; using System.Globalization; using System.Threading; class Program { static void Main(string[] args) { int val = 1234567890; Console.WriteLine(val.ToString("N")); Console.WriteLine(val.ToString("N",new CultureInfo("fr-FR"))); Thread.CurrentThread.CurrentCulture = new CultureInfo("de-DE"); Console.WriteLine(val.ToString("N")); } }