本文整理自网络，侵删。
用 IOUtils 单元下的 TDirectory.GetFiles 获取文件列表太方便了;
下面的例子只是 TDirectory.GetFiles 的典型应用...
unit Unit1;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls;
type
TForm1 = class(TForm)
btn1: TButton;
btn2: TButton;
btn3: TButton;
mmo1: TMemo;
lbl1: TLabel;
procedure btn1Click(Sender: TObject);
procedure btn2Click(Sender: TObject);
procedure btn3Click(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;
var
Form1: TForm1;
implementation
{$R *.dfm}
uses IOUtils, Types;
const path = 'D:Program FilesEmbarcaderoRAD Studio7.0';
procedure TForm1.btn1Click(Sender: TObject);
var
dir: TDirectory; {这是个结构, 后面就不再声明了, 将直接使用}
files: TStringDynArray; {TStringDynArray = array of string;}
str: string;
begin
files := dir.GetFiles(path);
mmo1.Clear;
for str in files do mmo1.Lines.Add(str);
end;
procedure TForm1.btn2Click(Sender: TObject);
var
files: TStringDynArray;
str: string;
begin
files := TDirectory.GetFiles(path, '*.txt');
mmo1.Clear;
for str in files do mmo1.Lines.Add(str);
end;
procedure TForm1.btn3Click(Sender: TObject);
var
files: TStringDynArray;
str: string;
begin
files := TDirectory.GetFiles(path, '*.txt', TSearchOption.soAllDirectories);
mmo1.Clear;
for str in files do mmo1.Lines.Add(str);
end;
end.
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