private void ShowEntries(string entryDate)
 {
     foreach (AgendaEntry entry in AgendaTools.FilterByDate(entryDate, agendaController.GetAgenda()))
     {
         Console.WriteLine(AgendaTools.BuildEntryShowingMessage(entry));
     }
 }
        public void ExecuteTask(string entryText)
        {
            ArrayList entriesToShow = FilterByText(entryText, agendaController.GetAgenda());

            foreach (AgendaEntry entry in entriesToShow)
            {
                Console.WriteLine(AgendaTools.BuildEntryShowingMessage(entry));
            }
        }