Authentication « WebClient « Net

You can supply a username and password to an HTTP or FTP site by creating a NetworkCredential object and assigning it to the Credentials property of WebClient or WebRequest:


using System;
using System.Net;
using System.IO;
using System.Linq;
using System.Text;

class Program
{
    static void Main()
    {
        WebClient wc = new WebClient();
        wc.Proxy = null;
        wc.BaseAddress = "ftp://ftp.abc.com";

        // Authenticate, then upload and download a file to the FTP server.
        // The same approach also works for HTTP and HTTPS.

        string username = "nutshell";
        string password = "yourValue";
        wc.Credentials = new NetworkCredential(username, password);

        wc.DownloadFile("guestbook.txt", "guestbook.txt");

        string data = "Hello from " + Environment.UserName + "!\r\n"; 
        File.AppendAllText("guestbook.txt", data);

        wc.UploadFile("guestbook.txt", "guestbook.txt");
    }
}