using System;

using System.Globalization;

public class Program

{

    public static void Main()

    {

        Console.WriteLine(string.Format("CurrentCulture: {0}", CultureInfo.CurrentCulture));

        Console.WriteLine();

        ToString(DateTime.Now); ///Date, Datetime, Datetime2, Smalldatetime

        ToString(DateTimeOffset.Now); //Datetimeoffset

        ToString(DateTime.Today.TimeOfDay); 

        ToString(5673m); /// Decimal

        ToString(1234.567f); /// Float

        ToString(1234.567d); /// Double

        ToString((Int16)1); ///Smallint

        ToString((Int32)454); ///Int

    }

​

    private static void ToString(IFormattable o)

    {

        Console.WriteLine();

        Console.WriteLine(o.GetType().Name);

        Console.WriteLine();

        Console.WriteLine(string.Format("InvariantCulture: {0}", o.ToString(null, CultureInfo.InvariantCulture)));

        Console.WriteLine(string.Format("CurrentCulture: {0}", o.ToString(null, CultureInfo.CurrentCulture)));

    }

}