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System.SysUtils.DirectoryExists

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Object Pascal

function DirectoryExists(const Directory: string; FollowLink: Boolean = True): Boolean;

C++

extern DELPHI_PACKAGE bool __fastcall DirectoryExists(const System::UnicodeString Directory, bool FollowLink = true);

Properties

Type Visibility Source Unit Parent
function public
System.SysUtils.pas
System.SysUtils.hpp
System.SysUtils System.SysUtils

Description

Determines whether a specified directory exists.

Call DirectoryExists to determine whether the directory specified by the Directory parameter exists. If the directory exists, the function returns True. If the directory does not exist, the function returns False.

If a full path name is entered, DirectoryExists searches for the directory along the designated path. Otherwise, the Directory parameter is interpreted as a relative path name from the current directory.

Note: If the Directory parameter is a symbolic link and the FollowLink parameter is set to True, the method is performed on the target directory. If the first condition is True, but the FollowLink parameter is set to False, the method will be performed on the symbolic link. If the link is broken, the method will always return False.
Note: The Vcl.FileCtrl unit (Windows only) also contains a DirectoryExists function. However, the Vcl.FileCtrl version is deprecated, and the System.SysUtils version is preferred and can be used in multi-device applications.


Method behavior if the Directory parameter is a directory:

Target Exists FollowLink Method result

YES

True

True

YES

False

True

NO

True

False

NO

False

False


Method behavior if the Directory parameter is a symbolic link:

Target Exists FollowLink Method result

YES

True

True

YES

False

True

NO

True

False

NO

False

True


See Also


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