private void SetParameters()
        {
            try
            {
                Console.Write("Set customer first and last name: ");
                CustomerName = Console.ReadLine().ToString().Trim();
                if (CustomerName == "" || !CustomerName.Contains(" "))
                {
                    throw new Exception("Incorect Customer Name");
                }

                Console.Write("Set customer PESEL: ");
                PESEL = Console.ReadLine().ToString().Trim();
                if (!CheckPesel(PESEL))
                {
                    throw new Exception("Incorect PESEL");
                }

                Console.Write("Set prescription number: ");
                PrescriptionNumber = Console.ReadLine().ToString().Trim();
                if (PrescriptionNumber.Length != 20)
                {
                    throw new Exception("Incorect prescription number");
                }
            }
            catch (FormatException e)
            {
                Console.WriteLine("Incorrect Data: ", e.Message);
                Save();
            }
            catch (Exception e)
            {
                Console.WriteLine("Incorrect Data: ", e.Message);
                Save();
            }
        }