Data Types C#

using System;
using System.Globalization;
public class MainClass
{
   public static void Main()
   {
          double value;
    
          value = 1.2;
          Console.WriteLine(value.ToString("0.00", CultureInfo.InvariantCulture));
          Console.WriteLine(value.ToString("00.00", CultureInfo.InvariantCulture));
          Console.WriteLine(value.ToString("00.00", CultureInfo.CreateSpecificCulture("da-DK")));
    
          value = .086;
          Console.WriteLine(value.ToString("#0.##%", CultureInfo.InvariantCulture)); 
    
          value = 86000;
          Console.WriteLine(value.ToString("0.###E+0", CultureInfo.InvariantCulture));
    }
}
/*
1.20
01.20
01,20
8.6%
8.6E+4
*/