DelphiBasics
DirectoryExists
Function
Returns true if the given directory exists SysUtils unit
 function DirectoryExists ( const DirectoryName : string ) : Boolean;
Description
The DirectoryExists function returns True if the given DirectoryName file exists.
 
The directory is searched for in the current directory.
 
False may be returned if the user is not authorised to see the file.
 
Example code : Check for a directory before and after deleting it
// 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
  SysUtils,   // Unit containing the DirectoryExists command
  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
  dirName : String;

begin
  // Create a new directory
  dirName := 'Test Folder';
  CreateDir(dirName);

  // Now see if the directory exists
  if DirectoryExists(dirName)
  then ShowMessage(dirName+' exists OK')
  else ShowMessage(dirName+' does not exist');

  // Delete the directory and look again
  RemoveDir(dirName);
  if DirectoryExists(dirName)
  then ShowMessage(dirName+' still exists!')
  else ShowMessage(dirName+' no longer exists');
end;
 
end.
Hide full unit code
   Test Folder exists OK
   Test Folder no longer exists
 
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