Delphi ActiveX

FTP Download Text File to a Stream

See more FTP Examples

Demonstrates how to FTP download a text file to a Chilkat stream.

Note: This example requires Chilkat v9.5.0.67 or greater.

Delphi ActiveX

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Chilkat_TLB;

...

procedure TForm1.Button1Click(Sender: TObject);
var
success: Integer;
ftp: TChilkatFtp2;
streamObj: TChilkatStream;
t: IChilkatTask;
line: WideString;

begin
success := 0;

// This example assumes the Chilkat FTP2 API to have been previously unlocked.
// See FTP2 Unlock Sample for sample code.

ftp := TChilkatFtp2.Create(Self);

ftp.Hostname := 'www.my-ftp-server.com';
ftp.Username := 'mFtpLogin';
ftp.Password := 'myFtpPassword';
ftp.AuthTls := 1;
ftp.Passive := 1;

// Connect and login to the FTP server using TLS.
success := ftp.Connect();
if (success <> 1) then
  begin
    Memo1.Lines.Add(ftp.LastErrorText);
    Exit;
  end;

streamObj := TChilkatStream.Create(Self);

// Indicate the charset of the incoming data.
streamObj.StringCharset := 'utf-8';

// Create a task to do the FTP download.
t := ftp.GetFileToStreamAsync('lines.txt',streamObj.ControlInterface);
if (ftp.LastMethodSuccess <> 1) then
  begin
    Memo1.Lines.Add(ftp.LastErrorText);
    Exit;
  end;

// Start the task in a background thread.
t.Run();

// Read the incoming text data using any of the streamObj Read methods.
// This example will read line-by-line.

while streamObj.EndOfStream <> 1 do
  begin
    line := streamObj.ReadToCRLF();
    if (streamObj.LastMethodSuccess = 1) then
      begin
        Memo1.Lines.Add(line);
      end;
  end;

Memo1.Lines.Add('Success.');
end;