Delphi 2010 新增功能之: IOUtils 单元(1): 初识 TDirectory.GetFiles

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)

    Memo1: TMemo;

    Button1: TButton;

    Button2: TButton;

    Button3: TButton;

    procedure Button1Click(Sender: TObject);

    procedure Button2Click(Sender: TObject);

    procedure Button3Click(Sender: TObject);

  end;



var

  Form1: TForm1;



implementation



{$R *.dfm}



uses IOUtils, Types;



{这是随意拿来的测试路径}

const path = 'C:\Program Files\Embarcadero\RAD Studio\7.0';



//获取指定目录下的所有文件

procedure TForm1.Button1Click(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);

  Memo1.Clear;

  for str in files do Memo1.Lines.Add(str);

end;



//获取指定目录下的所有指定类型的文件

procedure TForm1.Button2Click(Sender: TObject);

var

  files: TStringDynArray;

  str: string;

begin

  files := TDirectory.GetFiles(path, '*.txt');

  Memo1.Clear;

  for str in files do Memo1.Lines.Add(str);

end;



//获取指定目录及其嵌套目录下的所有指定类型的文件

procedure TForm1.Button3Click(Sender: TObject);

var

  files: TStringDynArray;

  str: string;

begin

  files := TDirectory.GetFiles(path, '*.txt', TSearchOption.soAllDirectories);

  Memo1.Clear;

  for str in files do Memo1.Lines.Add(str);

end;



end.