C# 0 The Complete Reference

CookieCollection

 obtained 

from the response. 

CookieContainer

 simply provides the underlying storage mechanism 

for the cookies.

The following program displays the names and values of the cookies associated with 

the URI specified on the command line. Remember, not all websites use cookies, so you 

might have to try a few until you find one that does.

/* Examine Cookies.

   To see what cookies a website uses,

   specify its name on the command line.

   For example, if you call this program

   CookieDemo, then

     CookieDemo http://msn.com

   displays the cookies associated with msn.com.

*/

using System;

using System.Net;

class CookieDemo {

  static void Main(string[] args) {

    if(args.Length != 1) {

      Console.WriteLine("Usage: CookieDemo ");

      return ;

    }

    // Create a WebRequest to the specified URI.

    HttpWebRequest req = (HttpWebRequest)

           WebRequest.Create(args[0]);

    // Get an empty cookie container.

    req.CookieContainer = new CookieContainer();

    // Send the request and return the response.

    HttpWebResponse resp = (HttpWebResponse)

           req.GetResponse();

    // Display the cookies.

    Console.WriteLine("Number of cookies: " +

                        resp.Cookies.Count);

    Console.WriteLine("{0,-20}{1}", "Name", "Value");

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    for(int i=0; i < resp.Cookies.Count; i++)

      Console.WriteLine("{0, -20}{1}",

                         resp.Cookies[i].Name,

                         resp.Cookies[i].Value);

    // Close the response.

    resp.Close();

  }

}