https post username and pass

Why can't you just put the user id and password into the boxes and then click the button? You can do all that in your program. If you are lucky there will be a name and/or id for each of those to make them easy to find them.

Look at KeePass Password Safe; it does that type of thing. If you are able to use it to do automated logink then you at least know it is possible.

HTTPS is a secured web site that parses encrypted data to a web browser which then decrypts the data based on the certificate issued by the web site HTTPS provider.

Trying to send password info to the server from your form does not send the data in a form expected by the server page.

You cannot just create a form with 2 text boxes then send a post request and expect it to work, you need protocols which can only be provided by the site owner.

Sorry...

what I don't understand is: what the webbrowser component is doing when I click the long on???

Currently my app contains 2 forms: the first one contains just a webbrowser component pointing always to the school site, when I logged in to the site,I have to press another button to switch to the second form (sending the webbrowser HTML as a parameter), the second form gives the HTML to a class that parse it, extract all the data, schedules, news... and the form is just a UI to display those infos.

Everything is working fine! For the server side, it is just like I have opened internet explorer on my device and checked the website! He don't know what I am doing with the HTML after.

I am only annoyed by the fact I should press the logon button each time! So what is happening when I am pressing the button, is there a way to know? I guess it is a normal HTTPS POST.

And I don't see why should I be worry and why should i get the appointment

Then I am pretty sure you will need to make some arrangements with the site owners for the protocols to do what you want to do, if it's all legit, they should have no problem doing that otherwise you are, unfortunately,  probably done.

This is not an assignement, neither I want to hack into the school web site, I am developing a windows mobile application that logs in to the web site and parse HTML to get some info - ex, news - schedules- posts... etc. and I need to sign in with deferent accounts. That's what is all about! My app is mostly done - I am working very fine with parsing the HTML and extracting the data I need, the problem now is just with the log on! So If I can let the application log on instead of prompting for the password each 10 min, I am done.

theLizard: The web site is for the Telecom ParisTech ENST French ICT engineering school. So initially I thought that the student either wants us to do their class assignment for them, or they want to hack their school's web site. The subsequent explanation makes things less clear about whether the intent is honest. It might be that the person has a valid reason for wanting to automate a sign-in procedure and automatically obtain data. It might be that the person is attempting to do something they don't want to admit. Regardlous, your point is probably valid and relevant that it is not so easy to know how to use a HTTPrequest as the person thinks. I am not familiar with HTTPrequest enough to know, but I assume the web site must document it's use; is that what you are saying? If this is a valid request (in the sense of nothing malicious or illegal or a request for plagiarism) then I get thre impression the person needs to learn a bit more just to know what to ask for.

Now that I think about it, the person could easily be asking for help developing a phishing web site. They want to create a web page that takes the user id and password and then gets the page that results from signing in. That is all that is needed to steal student's security information. If so, I hope the university and the law catches the person and applies relevant justice.

Do you own https://eole.telecom-paristech.fr ? If you do not then you would have lots of problems doing what you want to do.

Appart from the fact that the site is a secured server, you would need to know what the site expects in it's user name password request.

It is not as simple as giving a name and password, the site may want these in a particular way for example the post may need to be formatted like  theUserr=UserName@thePassword=password@newUser=1 if you do not send the request the way that they want it, it would never succeed even if you gave the correct user name and password (well that's how a good security system would work)

If you do own the site then whats the problem?

I don't get what you don't understand. The problem is so clear:
1- I want to build a windows form application with just these 4 things: 2 textboxes, 1 button, 1 label.
2- The user enters in the first text box his user name and in the second his password.
3- When he clicks the button, the application should visit the "https://eole.telecom-paristech.fr/", and login in using the credentials that are already in the text boxes, after successful login, the label should display the Html code that the site generates.

So here we go:
     private void button1_Click(object sender, EventArgs e)
        {
//Step 1 easy, check if both of the text boxes are not empty, otherwise messagebox.show(you should enter username/password) and return;

//Step 2: connect to the https://eole.telecom-paristech.fr/
Here is the difficulty, What should I put right here to tell the site that the username is textbox1.text and the password is textbox2.text
How to use the HttpWebRequest? I think I should do a "POST" request or something like that.

//Step3: get the HTML response of the server, and put it in the label1.text

}

I know it is easier to use a webbrowser control, but If I do so, I can't have control on the user name and the password of the customer. (It would be just as if he logged in directly from internet explorer).

This application looks silly. In fact it is not what I am going to develop. If I can build this one, I wouldn't have a problem in the final app I am going to build. So I am trying to simplify things just to find people who can Help. So I repeat again: How can  I take the user name and password from 2 textboxes field and use them to connect to the mentioned site?. Consider that I want to develop an application that stores 5 usernames and passwords, and every 10 minutes, this app would log on to the site with a different user name and password to get info. So the login would be automatic, using Http request...
Thanks again, Hope I am clear now.