// a class for the chatroom
 // constructor assigns handlers, loggers, adds content to dictionaries from handlers
 public TestChatroom()
 {
     sortType           = 0;
     filterType         = 0;
     userFilter         = "";
     groupFilter        = "";
     isAsc              = true;
     messHandler        = new MessagesHandler();
     usersHandler       = new UsersHandler();
     this._loggedinUser = null;
     recievedMessages   = (Dictionary <Guid, Message>)messHandler.load();
     if (recievedMessages == null)
     {
         recievedMessages = new Dictionary <Guid, Message>();
         messHandler.save(recievedMessages);
     }
     registeredUsers = (Dictionary <String, User>)usersHandler.load();
     if (registeredUsers == null)
     {
         registeredUsers = new Dictionary <String, User>();
         usersHandler.save(registeredUsers);
     }
 }