internal void EditButtonClick()
        {
            EditOrAddEntertainmentWindow addOrEditEntertainment = new EditOrAddEntertainmentWindow(this, SelectedEntertainment);

            addOrEditEntertainment.ShowDialog();
        }
        internal void AddButtonClick()
        {
            EditOrAddEntertainmentWindow addOrEditEntertainment = new EditOrAddEntertainmentWindow(this);

            addOrEditEntertainment.ShowDialog();
        }