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.