protected void Session_End(object sender, EventArgs e)
 {
     Application.Lock();
     Application["count"] = (int)Application["count"] - 1;
     Application.UnLock();
     if (Session["user"] != null)
     {
         u = Session["user"] as Dollers.model.User;
         if (Application[u.room_ID.ToString()] != null)
         {
             Application.Lock();
             r = Application[u.room_ID.ToString()] as Dollers.model.Room;
             r.addNewMessage(new Dollers.model.Message(false, "断开连接", u));
             r.count--;
             if (r.count <= 0)
             {
                 List<string> list = Application["room_list"] as List<string>;
                 list.Remove(r.name);
                 Application["room_list"] = list;
                 Application[u.room_ID.ToString()] = null;
                 Application[u.room_ID.ToString() + "_flag"] = null;
             }
             else
             {
                 Application[u.room_ID.ToString()] = r;
                 Application[u.room_ID.ToString() + "_flag"] = DateTime.Now;
             }
             Application.UnLock();
         }
     }
 }
 public Room createRoom(string name, int max_count)
 {
     Room m = new Room(maxIDInc(maxRoomID), name, max_count);
     roomsList.Add(m.ID, m);
     return m;
 }