本文整理自网络，侵删。
DateUtils.IncYear();
DateUtils.IncMonth();
DateUtils.IncWeek();
DateUtils.IncDay();
DateUtils.IncHour();
DateUtils.IncMinute();
DateUtils.IncSecond();
DateUtils.IncMilliSecond();
unit Unit1;interfaceuses Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms, Dialogs, StdCtrls;type TForm1 = class(TForm) procedure FormCreate(Sender: TObject); end;var Form1: TForm1;implementation{$R *.dfm}uses DateUtils;procedure TForm1.FormCreate(Sender: TObject);var t1,t2: TDateTime; i: Int64; d: Double;begin t1 := StrToDateTime('2011-1-1 1:1:1'); t2 := IncYear(t1); ShowMessage(DateTimeToStr(t2)); //2012-1-1 1:01:01 t2 := IncYear(t1, 3); ShowMessage(DateTimeToStr(t2)); //2014-1-1 1:01:01 t2 := IncMonth(t1); ShowMessage(DateTimeToStr(t2)); //2011-2-1 1:01:01 t2 := IncWeek(t1); ShowMessage(DateTimeToStr(t2)); //2011-1-8 1:01:01 t2 := IncDay(t1); ShowMessage(DateTimeToStr(t2)); //2011-1-2 1:01:01 t2 := IncHour(t1); ShowMessage(DateTimeToStr(t2)); //2011-1-1 2:01:01 t2 := IncMinute(t1); ShowMessage(DateTimeToStr(t2)); //2011-1-1 1:02:01 t2 := IncSecond(t1); ShowMessage(DateTimeToStr(t2)); //2011-1-1 1:01:02 t2 := IncMilliSecond(t1); ShowMessage(FormatDateTime('yyyy-m-d h:n:s:zzz', t2)); //2011-1-1 1:01:01:001end;end.
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