RootDir = 要删除的根目录，一般情况下 RemoteDir 与 RootDir 相等}

procedure TForm1.FTP_DeleteAllFiles(var idFTP : TIdFtp;RemoteDir,RootDir : string);

label Files;

var

i,DirCount : integer;

Temp : string;

begin

idFTP.ChangeDir(RemoteDir);

if Pos(RootDir,idFTP.RetrieveCurrentDir) = 0 then Exit;

Files :

idFTP.List(nil);

DirCount := idFTP.DirectoryListing.Count ;

while DirCount = 0 do

begin

Temp := idFTP.RetrieveCurrentDir;

idFTP.ChangeDirUp;

idFTP.RemoveDir(Temp);

idFTP.List(nil);

DirCount := idFTP.DirectoryListing.Count ;

for i := 0 to DirCount - 1 do

if idFTP.DirectoryListing[i].FileName = RootDir then Exit;

end;

for i := 0 to DirCount - 1 do

begin

if Pos(RootDir,idFTP.RetrieveCurrentDir) = 0 then Break ;

if idFTP.DirectoryListing[i].ItemType = ditDirectory then

begin

FTP_DeleteAllFiles(idFTP,idFTP.DirectoryListing[i].FileName,RootDir);

end else begin

idFTP.Delete(idFTP.DirectoryListing[i].FileName);

goto Files ;

end;

end;

end;

unit Unit1;

interface

uses

Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,

Dialogs, IdBaseComponent, IdComponent, IdTCPConnection, IdTCPClient,

IdFTP, StdCtrls, idftplist, ComCtrls, ExtCtrls;

type

Thread1 = class(TThread)

private

FidFTP : TIdFtp;

protected

procedure Execute; override;

public

constructor Create(var idFTP : TIdFtp);

end;

Thread2 = class(TThread)

private

FidFTP : TIdFtp;

protected

procedure Execute; override;

public

constructor Create(var idFTP : TIdFtp);

procedure FTP_DeleteAllFiles(var idFTP: TIdFtp; RemoteDir: string);

end;

TForm1 = class(TForm)

IdFTP1: TIdFTP;

Button1: TButton;

Edit1: TEdit;

Edit2: TEdit;

Edit3: TEdit;

StatusBar1: TStatusBar;

Timer1: TTimer;

Memo1: TMemo;

Button3: TButton;

Edit4: TEdit;

procedure IdFTP1Connected(Sender: TObject);

procedure Button1Click(Sender: TObject);

procedure FormDestroy(Sender: TObject);

procedure IdFTP1Disconnected(Sender: TObject);

procedure IdFTP1Status(ASender: TObject; const AStatus: TIdStatus;

const AStatusText: String);

procedure Timer1Timer(Sender: TObject);

procedure Button3Click(Sender: TObject);

procedure Edit4Change(Sender: TObject);

private

{ Private declarations }

public

{ Public declarations }

function GetPrevDir(dir:string):string;

end;

var

Form1: TForm1;

T1: TThread;

T2: TThread;

implementation

{$R *.dfm}

procedure TForm1.IdFTP1Connected(Sender: TObject);

begin

Button1.Enabled := false;

Timer1.Enabled := true;

end;

procedure TForm1.Button1Click(Sender: TObject);

begin

if not IdFTP1.Connected then

begin

Timer1.Enabled := false;

IdFTP1.Tag := 0;

IdFTP1.Host := Edit1.Text;

IdFTP1.Username := Edit2.Text;

IdFTP1.Password := Edit3.Text;

IdFTP1.Port := strtoint(Edit4.Text);

T1 := Thread1.Create(IdFTP1);

end;

end;

procedure TForm1.FormDestroy(Sender: TObject);

begin

IdFTP1.Abort;

if IdFTP1.Connected then IdFTP1.Disconnect;

end;

procedure TForm1.IdFTP1Disconnected(Sender: TObject);

begin

Button1.Enabled := true;

if IdFTP1.Tag = 0 then Button1.Click;

end;

procedure TForm1.IdFTP1Status(ASender: TObject; const AStatus: TIdStatus;

const AStatusText: String);

begin

StatusBar1.Panels.Items[0].Text := AStatusText;

end;

procedure TForm1.Timer1Timer(Sender: TObject);

begin

Timer1.Enabled := false;

T2 := Thread2.Create(IdFTP1);

end;

{ Thread1 }

constructor Thread1.Create(var idFTP: TIdFtp);

begin

FidFTP := idFTP;

FreeOnTerminate := True;

inherited Create(false);

end;

procedure Thread1.Execute;

begin

try

FidFTP.Connect(true, -1);

except

end;

end;

{ Thread2 }

constructor Thread2.Create(var idFTP : TIdFtp);

begin

FidFTP := idFTP;

FreeOnTerminate := True;

inherited Create(false);

end;

procedure Thread2.Execute;

begin

try

FTP_DeleteAllFiles(FidFTP, '/');

except

end;

end;

{删除整个ftp目录，包括下面的文件, RemoteDir 要删除的目录}

procedure Thread2.FTP_DeleteAllFiles(var idFTP : TIdFtp; RemoteDir : string);

var

i,DirCount : integer;

Temp : string;

begin

idFTP.ChangeDir(RemoteDir);

Form1.Memo1.Lines.Add('ChangeDir:' + idFTP.RetrieveCurrentDir);

idFTP.List(nil);

DirCount := idFTP.DirectoryListing.Count;

if DirCount = 0 then

begin

try

idFTP.RemoveDir(idFTP.RetrieveCurrentDir);

Form1.Memo1.Lines.Add('Success:' + idFTP.RetrieveCurrentDir);

except

Form1.Memo1.Lines.Add('Failed:' + idFTP.RetrieveCurrentDir);

end;

//上级

Temp := Form1.GetPrevDir(idFTP.RetrieveCurrentDir);

if Temp <> '/' then FTP_DeleteAllFiles(idFTP, Temp);

end;

for i := 0 to DirCount - 1 do

begin

if idFTP.DirectoryListing[i].ItemType = ditDirectory then

begin