Log in and download file

Question

Hello Everyone,

I'm trying to write a C# program that can login and download a file from a website.

Here is my code:

using System;
using System.Collections.Specialized;
using System.Net;
using System.Windows.Forms;

namespace CodeProjectDownload
{
    public class CookiesAwareWebClient : WebClient
    {
        public CookieContainer CookieContainer;
        public CookieContainer MyProperty
        {
            get { return CookieContainer; }
            set { CookieContainer = value; }
        }
        public CookiesAwareWebClient()
        {
            CookieContainer = new CookieContainer();
        }

        protected override WebRequest GetWebRequest(Uri address)
        {
            WebRequest request = base.GetWebRequest(address);
            ((HttpWebRequest)request).CookieContainer = CookieContainer;
            return request;
        }
    }

public class Program
{
    private static void Download(string email, string password, string destination, string downloadUri)
{
    using (CookiesAwareWebClient client = new CookiesAwareWebClient())
    {
        NameValueCollection values = new NameValueCollection();
        values.Add("Email",email );
        values.Add("Password", password);
        values.Add("x", "10");
        values.Add("y", "10");
        values.Add("login", "login");

        // We authenticate first
        client.UploadValues("https://www.codeproject.com/script/Membership/LogOn.aspx?rp=%2f", values);

        // Now we can download

        //string modifieduri = "http://www.codeproject.com/script/articles/download.aspx?file=" + downloadUri.Replace("http://www.codeproject.com","") + "&rp=";
    string modifieduri = "https://www.codeproject.com/KB/buttons/1087610/FontAwesomeImageSample.zip";
    Console.WriteLine("url " + modifieduri);

        string filename = System.IO.Path.GetFileName(downloadUri);

        string filepathname = System.IO.Path.Combine(destination, filename);

        client.DownloadFile(modifieduri, filepathname);
    }

}
        static void Main(string[] args)
        {
    try
    {
            Download("[email protected]", "mfAwItJZ9+xZ", @"C:\Users\lswennen\Work Folders\WIP\Archiving\BIMCo connection", "/KB/buttons/1087610/FontAwesomeImageSample.zip");
            //Console.ReadLine();
            MessageBox.Show("ok");
    } catch (Exception e)
      {
                Console.WriteLine("{0}", e);
        MessageBox.Show("pas ok");
      }
    }
}
}

And when I run it, a "zip file" is downloaded but "corrupted". When I open it with the notepad, it looks like a html source code. So I added ".html" extension" and when I open it it shows the webpage which will start the downloading. If I wait a bit my browser try to download the file but it fails because it's from my ".html" file.

What am I doing wrong to download the html source code and not the file ?

Thanks in advance.