C# (CSharp) CalTime.Undo примеры использования

Пример #1

        private void validateTimeInput()
        {
            DateTime result;
            string   tempDateTime = "";

            tempDateTime = DateTime.Now.Year.ToString() + "/" + DateTime.Now.Month.ToString() + "/" + DateTime.Now.Day.ToString() + " " + CalTime.Text;

            try
            {
                result = Convert.ToDateTime(tempDateTime);
            }
            catch (Exception ex)
            {
                CalTime.Undo();
                validateTimeInput();
            }
        }