public void SetupPartyList()



        {
            peanut   = new dog("peanut", "Bichon");
            fifi     = new dog("fifi", "Poodle");
            lulu     = new dog("lulu", "Beagle");
            giselle  = new dog("giselle", "Border Collie");
            clarance = new dog("Clarence", "German Sheppard");
            roy      = new dog("Roy", "Beagle");

            peanut.prev_dog   = null;
            peanut.next_dog   = fifi;
            fifi.prev_dog     = peanut;
            fifi.next_dog     = clarance;
            clarance.prev_dog = fifi;
            clarance.next_dog = roy;
            giselle.prev_dog  = clarance;
            giselle.next_dog  = lulu;
            lulu.prev_dog     = fifi;
            lulu.next_dog     = roy;
            roy.prev_dog      = lulu;
            roy.next_dog      = null;
            head = peanut;
            tail = roy;
        }
        public string printPartyList_reverse()
        {
            string inviteList = "*____*";

            temporary = tail;
            while (temporary.prev_dog != null)
            {
                inviteList += temporary.dog_name + "*___*";
                temporary   = temporary.prev_dog;
            }
            inviteList += temporary.dog_name + "*___*";
            return(inviteList);
        }
        public string printPartyList()
        {
            string inviteList = "*____*";

            temporary = head;
            while (temporary.next_dog != null)
            {
                inviteList += temporary.dog_name + "*___*";
                temporary   = temporary.next_dog;
            }
            inviteList += temporary.dog_name + "*___*";
            return(inviteList);
        }