static void Main(string[] args)
        {
            ToDoNote note1 = new ToDoNote("Susan is here", DateTime.Now, Priority.high);
            ToDoNote note2 = new ToDoNote("Nitesh is here", DateTime.Now, Priority.high);

            ToDoList list = new ToDoList("Nitesh C**k");

            list.AddNotes(note1);
            list.AddNotes(note2);
            for (int i = 0; i < list.Length; i++)
            {
                list[i].TakeInputFileName($"Test{i}.xml");
            }
        }
 public void AddNotes(ToDoNote note)
 {
     notes.Add(note);
 }