| Description |
The DayOfTheWeek function returns an index number for the day of the week :
| 1 | = Monday |
| 2 | = Tuesday |
| 3 | = Wednesday |
| 4 | = Thursday |
| 5 | = Friday |
| 6 | = Saturday |
| 7 | = Sunday |
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| Notes |
DayOfTheWeek is ISO 8601 compliant, since it uses Monday as the start of the week.
DayOfWeek is not compliant - it treats Sunday as the starting day.
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| Related commands |
| DayOfTheMonth |
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Gives day of month index for a TDateTime value (ISO 8601) |
| DayOfTheYear |
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Gives the day of the year for a TDateTime value (ISO 8601) |
| DayOfWeek |
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Gives day of week index for a TDateTime value |
| MonthOfTheYear |
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Gives the month of the year for a TDateTime value |
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| Example code : Show the day of the week for Christmas 2002 |
// Full Unit code.
// -----------------------------------------------------------
// You must store this code in a unit called Unit1 with a form
// called Form1 that has an OnCreate event called FormCreate.
unit Unit1;
interface
uses
DateUtils, // Unit containing the DayOfTheWeek command
SysUtils,
Forms, Dialogs;
type
TForm1 = class(TForm)
procedure FormCreate(Sender: TObject);
end;
var
Form1: TForm1;
implementation
{$R *.dfm} // Include form definitions
procedure TForm1.FormCreate(Sender: TObject);
var
myDate : TDateTime;
day : array[1..7] of string;
begin
// We cannot use LongDayNames - they start on Sunday
day[1] := 'Monday';
day[2] := 'Tuesday';
day[3] := 'Wednesday';
day[4] := 'Thursday';
day[5] := 'Friday';
day[6] := 'Saturday';
day[7] := 'Sunday';
myDate := EncodeDate(2002, 12, 25);
ShowMessage('Christmas day 2002 is on a '+day[DayOfTheWeek(myDate)]);
end;
end.
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| Hide full unit code |
Christmas day 2002 is on a Wednesday
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