C#里操作时间的例子!-.NET教程,C#语言

    namespace wrox.samplecode.csharppreview.chbaseclasses
    {
    using system;
    using system.drawing;
    using system.collections;
    using system.componentmodel;
    using system.winforms;
    using system.data;
     public class formdisplaydatetimes : system.winforms.form
    {
    … as before

    /// <summary>
    ///    summary description for formdisplaydatetimes.
    /// </summary>       public formdisplaydatetimes()
       {
          //
          // required for win form designer support
          //
     

          initializecomponent();

          //
          // todo: add any constructor code after initializecomponent call
          //          datetime dtcurrtime = datetime.now;
          additem("current time is " + dtcurrtime.tostring());
          additem("year is " + dtcurrtime.year.tostring());
          additem("month is " + dtcurrtime.month.tostring());
          additem("day of month is " + dtcurrtime.day.tostring());
          additem("day of week is " + dtcurrtime.dayofweek.tostring());
          additem("hour is " + dtcurrtime.hour.tostring());
          additem("minute is " + dtcurrtime.minute.tostring());
          additem("second is " + dtcurrtime.second.tostring());
          additem("millisecond is " + dtcurrtime.millisecond.tostring());
          additem("shortdatestring is " + dtcurrtime.toshortdatestring());
          additem("longdatestring is " + dtcurrtime.tolongdatestring());
          additem("shorttimestring is " + dtcurrtime.toshorttimestring());
          additem("longtimestring is " + dtcurrtime.tolongtimestring());
       }
public class formtimespans : system.winforms.form

    {
    … as before

       public formtimespans()

       {
          //
          // required for win form designer support
          //
          initializecomponent();

          //
          // todo: add any constructor code after initializecomponent call
          //
    
          // constructor: timespan(days, hours, minutes, seconds)
          timespan span = new timespan(4,2,15,0);

          // initialize date to 1 jan 2000, 12 pm
          // constructor: datetime(year,month,day,hours,minutes,seconds,
          // milliseconds)
          datetime dtold = new datetime(2000,1,1,12,0,0,0);

          datetime dtnew = dtold + span;

          additem("original date was " + dtold.tolongdatestring() +
                  "  " + dtold.toshorttimestring());
          additem("adding time span of " + span.tostring());
          additem("result is " + dtnew.tolongdatestring() + "  " +
                   dtnew.toshorttimestring());
          additem("");
          additem("time span broken down is:");
          additem("days: " + span.days.tostring());
          additem("hours: " + span.hours.tostring());
          additem("minutes: " + span.minutes.tostring());
          additem("seconds: " + span.seconds.tostring());
          additem("milliseconds: " + span.milliseconds.tostring());
          additem("ticks: " + span.ticks.tostring());
          additem("");
          additem("tickspersecond: " + timespan.tickspersecond.tostring());
          additem("ticksperhour: " + timespan.ticksperhour.tostring());

       }