Mega Code Archive
0595 Forms Authentication
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A typical website that implements forms authentication will contain HTML like this:
<form action="http://www.somesite.com/login" method="post"><input type="text" id="user" name="username"><input type="password" id="pass" name="password"><button type="submit" id="login-btn">Log In</button></form>
Here's how to log into such a site:
using System;
using System.Net;
using System.Threading;
using System.IO;
using System.Text;
class ThreadTest
{
static void Main()
{
string loginUri = "http://www.somesite.com/login";
string username = "username";
string password = "password";
string reqString = "username=" + username + "&password=" + password;
byte[] requestData = Encoding.UTF8.GetBytes(reqString);
CookieContainer cc = new CookieContainer();
var request = (HttpWebRequest)WebRequest.Create(loginUri);
request.Proxy = null; request.CookieContainer = cc;
request.Method = "POST";
request.ContentType = "application/x-www-form-urlencoded";
request.ContentLength = requestData.Length;
using (Stream s = request.GetRequestStream())
s.Write(requestData, 0, requestData.Length);
using (var response = (HttpWebResponse)request.GetResponse())
foreach (Cookie c in response.Cookies)
Console.WriteLine(c.Name + " = " + c.Value);
}
}
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