C Sharp :: Obtaining Cookie Value From Logged In User On Website

I am trying to obtain the values of cookies from a particular website. The problem is, when I run the following code, it only loops through 4 of 10 cookie values present.

Furthermore, the values are turning up as deleted: Reference

HttpWebRequest Request = (HttpWebRequest)WebRequest.Create("http://www.mysite.com");
Request.CookieContainer = new CookieContainer();
HttpWebResponse Response = (HttpWebResponse)Request.GetResponse();  
foreach (Cookie cook in Response.Cookies) {                          
           Console.WriteLine("{0} = {1}", cook.Name, cook.Value);           
       }  

Then I came across this code, which states it will loop through every cookie value and obtain its values: Reference

int loop1, loop2;         
       HttpCookieCollection MyCookieColl;
       HttpCookie MyCookie;
       MyCookieColl = Request.Cookies;  
       String[] arr1 = MyCookieColl.AllKeys; 
       for (loop1 = 0; loop1 < arr1.Length; loop1++) {
           MyCookie = MyCookieColl[arr1[loop1]];          
           String[] arr2 = MyCookie.Values.AllKeys;
       }  

The problem with the above, I can't seem to find a reference to "Request". I am using the libraries "using System.Net and using System.Web", so I am unsure why Request is not being recognized.

My goal is to retrieve one cookie value so that when a user from my website logs in, my C# application will recognize that user.