Format double value to use Numeric ("N") Format Specifier in CSharp

using System;/* w  w w . j av a  2s  .c om*/
using System.Globalization;
public class MainClass {     
   static void Main()
   {
        double dblValue = -12445.6789;
        Console.WriteLine(dblValue.ToString("N", CultureInfo.InvariantCulture));
        // Displays -12,445.68
        Console.WriteLine(dblValue.ToString("N1", 
                          CultureInfo.CreateSpecificCulture("sv-SE")));
        // Displays -12 445,7 
        
        int intValue = 123456789;
        Console.WriteLine(intValue.ToString("N1", CultureInfo.InvariantCulture));
        // Displays 123,456,789.0 
  }
}