using System;
using System.Collections.Generic;
using System.Text;

namespace Console_DateTime

{
    class Program
    {
        static void Main(string[] args)

        {
            System.DateTime dtTodayNoon = new System.DateTime(2006, 9, 13, 12, 0, 0);
            System.DateTime dtYestMidnight = new System.DateTime(2006, 9, 12, 0, 0, 0);
            System.TimeSpan diffResult = dtTodayNoon - dtYestMidnight;
            Console.WriteLine("Yesterday Midnight - Today Noon = " + diffResult.Days);
            Console.WriteLine("Yesterday Midnight - Today Noon = " + diffResult.TotalDays);
            Console.ReadLine();
        }
    }

}