Service in vb.net that needs to login to an asp page

I am writing a service that needs to login into a .asp page This is what I was attempting but.... it did not work. Any help would be great. Thanks scott

VB Code:

Dim wc As New Net.WebClient 'the webclient
    Dim bt() As Byte 'the returned bytes
 
    'setup fields to be sent
    Dim fields As New Specialized.NameValueCollection
    fields.Add("j_username", "sls") 'search option
    fields.Add("j_password", "ssfsssfs") 'search box
    fields.Add("LogIn", "") 'button pressed
 
    bt = wc.UploadValues(URL, fields) 'send fields and retrieve response
    html = System.Text.Encoding.ASCII.GetString(bt) 'convert to text

Still Stuck... Lets say that I have a vb.net app that wants to loginto a page on a web site that requires Name and Password. What am I doing wrong

OK I have given up on the service part for the moment... I switched to an appliction I am making good progress but my question of the day is how do I know when the page has finished downloading after I do this:

webBrowser.Navigate("http://www.cure.com/")

IINM, the webBrowser has an event called DownloadComplete which you can handle.

Quote:

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Originally Posted by slr

I am writing a service that needs to login into a .asp page This is what I was attempting but.... it did not work. Any help would be great. Thanks scott

VB Code:

Dim wc As New Net.WebClient 'the webclient
    Dim bt() As Byte 'the returned bytes
 
    'setup fields to be sent
    Dim fields As New Specialized.NameValueCollection
    fields.Add("j_username", "sls") 'search option
    fields.Add("j_password", "ssfsssfs") 'search box
    fields.Add("LogIn", "") 'button pressed
 
    bt = wc.UploadValues(URL, fields) 'send fields and retrieve response
    html = System.Text.Encoding.ASCII.GetString(bt) 'convert to text

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You say it doesn't work. Does that mean that you're not able to download pages behind the login? Because in the code you posted you are not accepting any cookies. To stay logged in with a webpage you have to offer the same cookiecontainer/collection each time you attempt to download something.

Here is some C# code that I used to get a cookie from a certain site

Code:

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                                //create the post data
                                string postdata =
                                        "redirect=../index.php" +
                                        "&username=" + this.txtUserName.Text +
                                        "&password=" + this.txtPassWord.Text +
                                        "&autologin=on" +
                                        "&login=Login";

                                byte[] bytes = System.Text.Encoding.UTF8.GetBytes(postdata);

                                CookieContainer tmpContainer = new CookieContainer();

                                HttpWebRequest req = (HttpWebRequest) WebRequest.Create(loginurlconst);
                                req.CookieContainer = tmpContainer; //necesary??

                                req.Method = "POST";
                                req.ContentType = "application/x-www-form-urlencoded";
                                req.ContentLength = postdata.Length;

                                //get the stream used to pump out the post data
                                Stream upstream = req.GetRequestStream();

                                //send out the POST data
                                upstream.Write(bytes,0,bytes.Length);
                                upstream.Close();

                                //get the response
                                HttpWebResponse resp = (HttpWebResponse) req.GetResponse();
                       
                                mcookies = tmpContainer;
                       
                                resp.Close();

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edit: mcookies is a global var that will be used again the next time.
edit2: and this code doesn't actually get the html, but you can get the response stream from the resp object

I was thinking about how in PHP you can say: login.php?user=sls&pass=ssfsssfs, well if it is possible in ASP, then you could use:

VB Code:

System.Diagnostics.Process.Start("http://www.vbforums.com/login.php?user=" & txtuser & "&pass=" & txtpass & "submit=true")

Quote:

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Originally Posted by tylerm

I was thinking about how in PHP you can say: login.php?user=sls&pass=ssfsssfs, well if it is possible in ASP, then you could use:

VB Code:

System.Diagnostics.Process.Start("http://www.vbforums.com/login.php?user=" & txtuser & "&pass=" & txtpass & "submit=true")

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That only works for GET actions, POST action works differently and is most used for logins.