public string GetOwnerPhone() { string input = null; bool isValidInput = true; Console.WriteLine("->Insert owner phone number(no more then 10 digits)"); do { try { input = Console.ReadLine(); isValidInput = Treatment.IsValidOwnerPhone(input); } catch (FormatException) { InvalidInputTryAgainMsg(); isValidInput = false; } catch (ValueOutOfRangeException ofr) { Console.WriteLine(ofr.Message); Console.WriteLine("try again"); isValidInput = false; } }while (!isValidInput); return(input); }