System.DateTime和System.TimeSpan

static void UseDateAndTImes()

{

Console.WriteLine("=> Dates and Times:");

//这个构造函数接受年、月、日

DateTime dt = new DateTime(2011,10,27);

//他时星期几

Console.WriteLine("The day of {0} is {1} ",dt.Date, dt.DayOfWeek);

//月份现在是12月

dt = dt.AddMonths(2);

Console.WriteLine("Daylight savings : {0} ", dt.IsDayLightSavingTime());

//构造函数接受小时、分钟和秒数

TimeSpan ts = new TimeSpan(4,30,0);

Console.WriteLine(ts);

//从当前TimeSpan减去15分钟并且输出结果

Console.WriteLine(ts.Subtract(new TimeSpan(0,15,0)));

}