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Delphi Basics

FileExists procedure

Check availability of a file. Return true if file was exist.

Unit
SysUtils

Syntax:
function FileExists(const FileName: string): Boolean;

Where F is a file variable that has been opened.

example:

procedure TForm1.Button1Click(Sender: TObject);
var
 ..
 FileName: string;
  ..
begin
  FileName:= 'c:\test.dat';
  if not FileExists(FileName) then
  begin
    ShowMessage('File not found.');
    exit;
  end else
  begin
    ...
  end;
end;

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