HttpWebRequest和HttpWebResponse

Question

I`m building an application that need to authenticate session on a website and then submits/retrieved data.

This is what I`ve been able to do till now (through googling). I`ve been able to detect if the requested page actually exists or not, but more than that, I couldn`t proceed!

WebRequest request = WebRequest.Create("http://localhost/");
try
{
    using (WebResponse response = request.GetResponse())
    {
        HttpWebResponse httpResponse = (HttpWebResponse)response;
        textBlock1.Text = "Connected ...\n Status code is: " + httpResponse.StatusCode;
    }
}
catch (WebException e)
{
    using (WebResponse response = e.Response)
    {
        HttpWebResponse httpResponse = (HttpWebResponse)response;
        textBlock1.Text = "Error Code: " + httpResponse.StatusCode;
    }
}

This code just detects if the web source requested exists or not. Now I`ll assume that the source exists, how can I send username/password to be authenticated?

I`ll assume that the username/password fields are named user/pass simultaneously ... How can I send the username and password to the website to validate and read the response?

I believe that this part will be very helpful throughout the whole development process.

Answer 1

Have a look at this SO question (and answers): Login and retrieve data from embedded form page using C#

You only need to adjust the names of the form fields accordingly to your target site.

Answer 2

There is a Credentials property for the WebRequest object which you can use to send along with the request.

HttpWebRequest request = (HttpWebRequest)WebRequest.Create("url-here");
request.Credentials = new NetworkCredential("username", "password");