DateSys (Function)

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Date and time management functions

Date and Time management functions

Date management constants

DateTimeLocalToTimeZone

DateTimeLocalToUTC

DateTimeTimeZoneToLocal

IntegerToMonthInAlpha

Managing dates and times

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DateSys (Function)

In french: DateSys

Returns or modifies the system date (current date defined on the current computer).

Remarks:

The system date corresponds to the current date defined on the server.
This function is equivalent to Today.

Example

Res = DateSys() // Res = "20011225"
Res = DateToString(DateSys()) // Res = "25/12/2001"
Year = Left(DateSys(), 4)
// Year returns the current year (2001 for example)

// Changes the system date and displays the new date
DateSys("20020101")
Info(DateSys())

TodaysDate is Date = DateSys()
EDT_Date = DateToDayInAlpha(TodaysDate) + " " + TodaysDate.Day + ...
" " + DateToMonthInAlpha(TodaysDate) + " at " + ...
TimeToString(TimeSys(), "HH:MM:SS")
// The EDT_Date control contains for example: Monday 13 August at 14:44:17

Syntax

Getting the system date Hide the details

<Result> = DateSys()

<Result>: Character string or Date variable

System date in YYYYMMDD format (YYYY corresponds to the year, MM to the month and DD to the day).

Modifying the system date Hide the details

DateSys(<New date>)

<New date>: Character string, Date or DateTime variable

New system date. This date can correspond to:
a character string in YYYYMMDD format (YYYY corresponds to the year, MM to the month and DD to the day).
a character string in YYYYMMDDHHmmSSCC format (YYYY corresponds to the year, MM to the month, DD to the day, HH to hours, mm to minutes, SS to seconds and CC to hundredths of a second (use CCC for thousandths of a second)). In this case, only the date is taken into account.
a Date variable.
a DateTime variable. In this case, only the date is taken into account.

Remarks

To get the system date in a format other than YYYYMMDD, the string must be formatted using the DateToString, Right, Left functions or the date properties. The YYYYMMDD format was chosen because it allows you to check the order of dates. This would not be possible with a date in YYYYDDMM or DDMMYYYY format, for example.
On all current systems, the year of the system date can be between 1920 and 2120.
Caution: To modify the system date, you must have the administrator rights on the current computer.
In this version, DateSys can only be used to return the system date (of the current computer or the computer where the browser is running).
In simulation mode, the date of the PC is used. At runtime, the date of the mobile device is used.

Related Examples:

Unit examples (WINDEV): Calculations on durations

[ + ] Calculations on dates and times with the WLanguage functions:
- Calculate the duration between two moments (dates and times)
- Calculate a sum of durations
- Calculate an average of durations

Business / UI classification: Neutral code

Component: wd280std.dll