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procedure TForm1.Button1Click(Sender: TObject);
begin
  OpenDialog1.Execute;
  with idFTP1 do
    begin
    Username := 'musterlogin';
    Password := 'musterpw';
    Host := 'muster.host.de';
    Connect;
    IdFTP1.Put(OpenDialog1.FileName,
    ExtractFileName(OpenDialog1.FileName));
    Disconnect;
    end;
end;                    

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unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls, IdBaseComponent, IdComponent, IdTCPConnection,
  IdTCPClient, IdFTP;

type
  TForm1 = class(TForm)
    IdFTP1: TIdFTP;
    Button1: TButton;
    OpenDialog1: TOpenDialog;
    Button2: TButton;
    procedure Button1Click(Sender: TObject);
    procedure IdFTP1AfterClientLogin(Sender: TObject);
    procedure Button2Click(Sender: TObject);
  private
    { Private-Deklarationen }
  public
    { Public-Deklarationen }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.Button1Click(Sender: TObject);
begin
  OpenDialog1.Execute;
  with idFTP1 do
    begin
    Username := 'beispiel@1';
    Password := 'beispiel';
    Host := 'beispiel.kilu.de';
    Connect;
    end;


end;

procedure TForm1.IdFTP1AfterClientLogin(Sender: TObject);
begin
    IdFTP1.Put(OpenDialog1.FileName,
    ExtractFileName(OpenDialog1.FileName));
end;

procedure TForm1.Button2Click(Sender: TObject);
begin
  with idFTP1 do Disconnect;
end;

end.