Question Cant use the login cookie to browse through the website, logging out automatically.

[Gufran]

hi guys,
I am just a newbie to VB .NET, It may be a silly question for you but really it is bugging me from 3 days. I googled alot for the solution but cant find a way around.
here is the problem, I am logging into a website and storing the cookie, right after then I want to navigate to another page that is redirecting me to the login page again. I know I am not using the cookie the way it should be, can somebody kick me in right direction ?
here is the codes

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Private Sub loginbtn_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles loginbtn.Click
                dim url as system.uri = new system.uri("http://www.somewebsite.com/login.php")
                request = WebRequest.Create(url)
                loginid.Enabled = False
                loginpass.Enabled = False
                loginbtn.Enabled = False
                Me.Text = "Logging in..."
                request.Method = "POST"
                postData = "MobileNoLogin=" + loginid.Text + "&" + "LoginPassword=" + loginpass.Text
                byteArray = Encoding.UTF8.GetBytes(postData)
                request.CookieContainer = cookiejar
                request.ContentLength = byteArray.Length
                request.ContentType = "application/x-www-form-urlencoded"
                request.KeepAlive = True
                dataStream = request.GetRequestStream()
                dataStream.Write(byteArray, 0, byteArray.Length)
                response = request.GetResponse()
                stat = (CType(response, HttpWebResponse).StatusDescription)
                dataStream = response.GetResponseStream()
                reader = New StreamReader(dataStream)
                responseFromServer = reader.ReadToEnd
                messagebox.show(responsefromserver")                [B] '----------->> Shows that I am logged in :)[/B]
                reader.Close()
                dataStream.Flush()
                dataStream.Close()
                response.Close()
End Sub




Private Sub sendbtn_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles sendbtn.Click


                ' HERE IT REDIRECT ME TO THE LOGIN PAGE AGAIN :(
        
                request = WebRequest.Create("http://www.website.com/submitmessage.php")
                request.Method = "POST"
                postData = "recepient=somerecepient&Message=Hi, I am testing my application to send messages"
                byteArray = Encoding.UTF8.GetBytes(postData)
                request.CookieContainer = cookiejar
                request.ContentLength = byteArray.Length
                request.UserAgent = "Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.2.11) Gecko/20101012 Firefox/3.6.11"
                request.ContentType = "application/x-www-form-urlencoded"
                dataStream = request.GetRequestStream()
                dataStream.Write(byteArray, 0, byteArray.Length)
                response = request.GetResponse()
                dataStream.Close()
                stat = (CType(response, HttpWebResponse).StatusDescription)
                dataStream = response.GetResponseStream()
                reader = New StreamReader(dataStream)
                responseFromServer = reader.ReadToEnd
                messagebox.show(responsefromserver)             [B]'--------------> Here I can see the redirection to the login page :([/B]
            Catch ex As Exception
                If ex.ToString.Length <> 0 Then
                    MessageBox.Show(ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error, MessageBoxDefaultButton.Button1, MessageBoxOptions.DefaultDesktopOnly, False)
                    Exit Try
                End If
            End Try
        End If
    End Sub

 

[Gufran]

please help guys.