gistfile1.cpp

// Create the web request
HttpWebRequest request 
= WebRequest.Create("https://api.del.icio.us/v1/posts/recent") as HttpWebRequest;

// Add authentication to request
request.Credentials = new NetworkCredential("username", "password");

// Get response
using (HttpWebResponse response = request.GetResponse() as HttpWebResponse)
{
// Get the response stream
StreamReader reader = new StreamReader(response.GetResponseStream());

// Console application output
Console.WriteLine(reader.ReadToEnd());
}