private void NewCharacter_Click(object sender, RoutedEventArgs e)
        {
            EditCharacter editCharPage = new EditCharacter(Characters, new Character(true));

            NavigationService.Navigate(editCharPage);
        }
        private void EditButton_Click(object sender, RoutedEventArgs e)
        {
            EditCharacter editCharPage = new EditCharacter(Characters, SelectedCharacter);

            NavigationService.Navigate(editCharPage);
        }