Operations can be used to alter a date time and return a value or a new variable.
Uses System.DateUtils
Uses System.SysUtils
Increase +
Increases a date with a given value for a given time frame.
Available time frames: year, month, week, day, hour, minute, second
The amount that needs to be changed must be an integer value
Example: Date value: 2023-11-01 00:00:00 - Time frame: month - Increase number: 2
begin var IncreasedDate: TDateTime; IncreasedDate := IncMonth(Date, 2); end; |
Result: 2024-01-01 00:00:00
To decrease a date value, use the increase operation with a negative number.
Start Of +
Get the start of the given time frame of the given date time.
Available time frames: year, month, week, day, hour, minute, second
Example:
Date value: 2024-12-31 02:04:10 - Time frame: week
begin var StartOfDate: TDateTime; StartOfDate := StartOfTheWeek(Date); end; |
Result: 2024-12-30 00:00:00
EndOf +
Get the end of the given time frame of the given date time.
Available time frames: year, month, week, day, hour, minute, second
Example:
Date value: 2023-07-23 02:04:10 - Time frame: year
begin var EndOfDate: TDateTime; EndOfDate := EndOfTheYear(Date); end; |
Result: 2023-12-31 23:59:59
