Reference for package '#rtl'

StrToDate

Convert a date string to a TDateTime value.

Declaration

Source position: datih.inc line 141

  function StrToDate(const S: ShortString) : TDateTime;
  function StrToDate(const S: Ansistring) : TDateTime;
  function StrToDate(const S: ShortString; separator: Char) : TDateTime;
  function StrToDate(const S: AnsiString; separator: Char) : TDateTime;
  function StrToDate(const S: string; FormatSettings: TFormatSettings)
                     : TDateTime;
  function StrToDate(const S: ShortString; const useformat: string; 
                    separator: Char) : TDateTime;
  function StrToDate(const S: AnsiString; const useformat: string; 
                    separator: Char) : TDateTime;
  function StrToDate(const S: PChar; Len: Integer; 
                    const useformat: string; separator: Char) : TDateTime;

Description

StrToDate converts the string S to a TDateTime date value. The Date must consist of 1 to three digits, separated by the DateSeparator character. If two numbers are given, they are supposed to form the day and month of the current year. If only one number is given, it is supposed to represent the day of the current month. (This is not supported in Delphi)

The order of the digits (y/m/d, m/d/y, d/m/y) is determined from the ShortDateFormat variable.

Errors

On error (e.g. an invalid date or invalid character), an EConvertError exception is raised.

See also

Name Description
DateToStr Converts a TDateTime value to a date string with a predefined format.
EConvertError Conversion error.
StrToTime Convert a time string to a TDateTime value.
TimeToStr Convert a TDateTime time to a string using a predefined format.

Example

Program Example19;
{ This program demonstrates the StrToDate function }
Uses sysutils;
Procedure TestStr (S : String);
begin
  Writeln (S,' : ',DateToStr(StrToDate(S)));
end;
Begin
  Writeln ('ShortDateFormat ',ShortDateFormat);
  TestStr(DateTimeToStr(Date));
  TestStr('05'+DateSeparator+'05'+DateSeparator+'1999');
  TestStr('5'+DateSeparator+'5');
  TestStr('5');
End.