Posting form data from VB.NET to PHP script - php

Question

So I am trying to make a login form on my vb.net application that would connect in my mysql database via my php script. So I've set up a wampp server to test it out. Got my php code below
<?php
if($_POST)
{
if(isset($_POST["username"]) && isset($_POST["password"]))
{
$connect = mysql_pconnect("localhost","root","");
if($connect)
{
$select = mysql_select_db("ktmf",$connect);
if($select)
{
$user = mysql_escape_string($_POST["username"]);
$pwd = mysql_escape_string($_POST["password"]);
$GetRows = mysql_query("SELECT * FROM users WHERE username='$user' AND password='$pwd'");
$RowCount=mysql_num_rows($GetRows);
if($RowCount>0)
{
die("Correct !");
}
else
{
die("Incorrect !");
}
}
else
{
die("Unable to select database." . mysql_error());
}
}
else
{
die("Unable connect to database." . mysql_error());
}
}
else
{
die("Access Denied!");
}
}
else
{
die("Access Denied!");
}
?>
and then I got my vb.net code there
Imports System.Net
Imports System.Text
Public Class login
Function AuthUser(ByVal AuthenticationPage As String, ByVal Username As String, ByVal Password As String) As Boolean
Dim wc As New WebClient()
wc.Headers.Add("Content-Type", "application/x-www-form-urlencoded")
Dim Data As String = String.Format("username={0}&password={1}", WebUtility.UrlEncode(Username), WebUtility.UrlEncode(Password))
Dim ResponseBytes() As Byte = wc.UploadData(AuthenticationPage, "POST", Encoding.ASCII.GetBytes(Data))
Dim Response As String = Encoding.ASCII.GetString(ResponseBytes)
If Response.Contains("Correct") Then
Return True
Else
Return False
End If
End Function
Private Sub login_Load(sender As Object, e As EventArgs) Handles MyBase.Load
End Sub
Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
If AuthUser("http://127.0.0.1/login.php", TextBox1.Text, TextBox2.Text) Then
Me.Hide()
works.Show()
Else
MsgBox("You have provided invalid username or password. Unable to login.")
End If
End Sub
End Class
So when I try to login with the Application I got the Error "You have provided invalid username or password. Unable to login." wich I specified incase of error.
I still dont know what I did wrong, But if someone could help me I'd apreciate.
thanks

Answer 1

Your question does not contain much information, so only generaly:
1) Check what actual response (if any) you get
2) If you do not get any response, check web server log to see, if the request make it there at all
3) Test your PHP script independently on VB.NET. E.g. Simple HTML form would do.
If you share with us your findings based on above, you may get more specific answers.