System.DateUtils.DaysBetween

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Delphi

function DaysBetween(const ANow, AThen: TDateTime): Integer;

C++

extern DELPHI_PACKAGE int __fastcall DaysBetween(const System::TDateTime ANow, const System::TDateTime AThen);

Properties

Type	Visibility	Source	Unit	Parent
function	public	System.DateUtils.pas System.DateUtils.hpp	System.DateUtils	System.DateUtils

Description

Returns the number of whole days between two specified TDateTime values.

Call DaysBetween to obtain the difference, in days, between two TDateTime values.

DaysBetween counts only whole days. Thus, DaysBetween reports the difference between Dec 31, 1999 11:59 P.M. and Jan 1, 2000 11:58 P.M. as 0, because the difference is one minute short of an entire day.

DaysBetween always returns a positive result and therefore the parameter values are interchangeable.

See Also

• DaySpan

• HoursBetween

• MilliSecondsBetween

• MinutesBetween

• MonthsBetween

• SecondsBetween

• WeeksBetween

• YearsBetween

• WithinPastDays

• Date and Time Support

Code Examples

• DateTimeCompare (C++)
• DateTimeCompare (Delphi)