本文整理自网络，侵删。
和 TDirectory.GetFiles 用法一样, TDirectory.GetDirectories 是用来获取子目录的.
另外还有 TDirectory.GetFileSystemEntries 可同时获取文件与子目录, 用法都一样.
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;
Button4: TButton;
procedure Button1Click(Sender: TObject);
procedure Button2Click(Sender: TObject);
procedure Button3Click(Sender: TObject);
procedure Button4Click(Sender: TObject);
end;
var
Form1: TForm1;
implementation
{$R *.dfm}
uses IOUtils, Types;
const path = 'C:\Program Files\Embarcadero\RAD Studio\7.0';
//获取指定目录下的文件与子目录
procedure TForm1.Button1Click(Sender: TObject);
var
dfs: TStringDynArray;
str: string;
begin
dfs := TDirectory.GetFileSystemEntries(path);
Memo1.Clear;
for str in dfs do Memo1.Lines.Add(str);
end;
//获取指定目录下的、名称是 L 开头的文件与子目录
procedure TForm1.Button2Click(Sender: TObject);
var
dfs: TStringDynArray;
str: string;
begin
dfs := TDirectory.GetFileSystemEntries(path, 'L*');
Memo1.Clear;
for str in dfs do Memo1.Lines.Add(str);
end;
//获取指定目录及嵌套目录下的所有文件与子目录
procedure TForm1.Button3Click(Sender: TObject);
var
dfs: TStringDynArray;
str: string;
begin
dfs := TDirectory.GetFileSystemEntries(path + '\source', TSearchOption.soAllDirectories, nil);
Memo1.Clear;
for str in dfs do Memo1.Lines.Add(str);
end;
//使用 TDirectory.TFilterPredicate 函数参数
procedure TForm1.Button4Click(Sender: TObject);
var
dfs: TStringDynArray;
begin
Memo1.Clear;
dfs := TDirectory.GetFileSystemEntries(path,
function(const Path: string; const SearchRec: TSearchRec): Boolean
begin
//这里可以有更多过滤条件或其他处理
Memo1.Lines.Add(Path + '\' + SearchRec.Name);
end
);
end;
end.
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