C# 时间日期

using System;  // 包括所有的date/time

class testDateTime
{
  public static void Main()
  {
    DateTime CurrTime = DateTime.Now;

    Console.WriteLine("DateTime display listing specifier and result:\n");

    Console.WriteLine("d = {0:d}", CurrTime );  // Short date mm/dd/yyyy
    Console.WriteLine("D = {0:D}", CurrTime );  // Long date day, month dd, yyyy
    Console.WriteLine("f = {0:f}", CurrTime );  // Full date/short time day, month dd, yyyy hh:mm
    Console.WriteLine("F = {0:F}", CurrTime );  // Full date/full time day, month dd, yyyy HH:mm:ss AM/PM
    Console.WriteLine("g = {0:g}", CurrTime );  // Short date/short time mm/dd/yyyy HH:mm
    Console.WriteLine("G = {0:G}", CurrTime );  // Short date/long time mm/dd/yyyy hh:mm:ss
    Console.WriteLine("M = {0:M}", CurrTime );  // Month dd
    Console.WriteLine("R = {0:R}", CurrTime );  // ddd Month yyyy hh:mm:ss GMT
    Console.WriteLine("s = {0:s}", CurrTime );  // yyyy-mm-dd hh:mm:ss  can be sorted!
    Console.WriteLine("t = {0:t}", CurrTime );  // Short time hh:mm AM/PM
    Console.WriteLine("T = {0:T}", CurrTime );  // Long time hh:mm:ss AM/PM
    Console.WriteLine("u = {0:u}", CurrTime );  // yyyy-mm-dd hh:mm:ss  universal/sortable
    Console.WriteLine("U = {0:U}", CurrTime );  // day, month dd, yyyy hh:mm:ss AM/PM
    Console.WriteLine("Y = {0:Y}", CurrTime );  // Month, yyyy
    Console.WriteLine();
    Console.WriteLine("DateTime.Month     = " + CurrTime.Month);      // number of month
    Console.WriteLine("DateTime.DayOfWeek = " + CurrTime.DayOfWeek);  // full name of day
    Console.WriteLine("DateTime.TimeOfDay = " + CurrTime.TimeOfDay);  // 24 hour time

    // number of 100-nanosecond intervals that have elapsed since 1/1/0001, 12:00am
    // useful for time-elapsed measurements
    Console.WriteLine("DateTime.Ticks     = " + CurrTime.Ticks);

    Console.Read();  // wait
  }
}