Solved

Generate PostData value for WebBrowser

Posted on 2003-11-12
4
1,670 Views
Last Modified: 2012-05-04
Hi,

I want download page from a site that required login before entering.
I have username and password for the site, but want enter it programatically (without manually entering username/password on site logon page).

I tried use webbrowser for the task.
I found that I can use OnBeforeNavigate2 event.
There is parameter PostData that provides required information for the server.

Question is : how to generate a value of PostData parameter?

Regards.
0
Comment
Question by:Slavak
  • 3
4 Comments
 
LVL 26

Accepted Solution

by:
EddieShipman earned 250 total points
ID: 9737060
Here's how to do it with the Indy idHTTP component.

procedure TForm1.SendPostData;
Var
  aStream: TMemoryStream;
  Params: TStringStream;
begin
  aStream := TMemoryStream.create;
  Params := TStringStream.create('');

  try
    with IdHTTP1 do
    begin
      Params.WriteString(URLEncode('teste=' + 'yes' + '&'));
      Params.WriteString(URLEncode('name=' + 'ivan' + '&'));
      Params.WriteString(URLEncode('number=' + '102'));
      Request.ContentType := 'application/x-www-form-urlencoded';
      try
        Post('http://localhost/teste.asp', Params, aStream);
      except
        on E: Exception do
          showmessage('Error encountered during POST: ' + E.Message);
      end;
    end;
  aStream.WriteBuffer(#0' ', 1);
  aStream.Position := 0;
  Memo1.Lines.LoadFromStream(aStream);
  except
  end;
end;

Here is how using TWebBrowser:
http://www.members.shaw.ca/iedelphi/webbrowser.htm#advanced9
0
 
LVL 3

Author Comment

by:Slavak
ID: 9737712
Thanks, Eddie.

Points yours, but can you answer me for some related questions?

-- does Indy components provides support for https protocol?
-- does Indy can download web pages faster then webbrowser?
-- do you know any other free Delphi component that can download http/https pages faster?

Slava.

P.S. I will be glad to get answer for this questions from anyone. I will give aditional points for the answer.
0
 
LVL 26

Expert Comment

by:EddieShipman
ID: 9738941
Yes
Yes
don't know
0
 
LVL 26

Expert Comment

by:EddieShipman
ID: 9738946
If you are not needing to interact with the page, I'd suggest using idHTTP because you only
get back the HTML, not the images, objects, etc...
0

Featured Post

Free Tool: SSL Checker

Scans your site and returns information about your SSL implementation and certificate. Helpful for debugging and validating your SSL configuration.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
Delphi XE10, MySQL Query 4 168
how to center only a line in richedit? 4 62
Correct Component for Shopping Cart. 2 113
Delphi IDE crash without error message ... 7 99
This article explains how to create forms/units independent of other forms/units object names in a delphi project. Have you ever created a form for user input in a Delphi project and then had the need to have that same form in a other Delphi proj…
Introduction I have seen many questions in this Delphi topic area where queries in threads are needed or suggested. I know bumped into a similar need. This article will address some of the concepts when dealing with a multithreaded delphi database…
This video shows how to use Hyena, from SystemTools Software, to bulk import 100 user accounts from an external text file. View in 1080p for best video quality.

820 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question