using System;

using System.Text.RegularExpressions;

public class Program

{

    public static void Main()

    { 

        //ตัวอย่าง error

        var pinLength = new PinMobile("1236").Pin; 

        var pinFormat = new PinMobile("123456").Pin; 

        var pinValid = new PinMobile("353123").Pin; 

        Console.WriteLine($"Pin {pinValid} Valid"); 

        //เวลาใช้เรียกใช้

        var a = new CustomerSetPinMobile

        {

            CustomerId = Guid.NewGuid(),

            Pin = new PinMobile(pinValid)

        };

    } 

}

​

public class PinMobile

    {

        public string Pin {get;set;}

        public PinMobile(string pin)

        {

            if (pin.Length < 6)

            {

                Console.WriteLine($"pin {pin} Length isn't valid."); 

                //throw new ArgumentException("LengthCode isn't valid.");

            }

            else{

                PinFormat(pin);

            } 

            Pin = pin;

        }

        private void PinFormat(string pin)

        {

            var checkPinRegularExpressions = new Regex(@"^(?!(\d)\1{4}|(?:0(?=1)|1(?=2)|2(?=3)|3(?=4)|4(?=5)|5(?=6)|6(?=7)|7(?=8)|8(?=9)|9(?=0)){5}\d$|(?:0(?=9)|1(?=0)|2(?=1)|3(?=2)|4(?=3)|5(?=4)|6(?=5)|7(?=6)|8(?=7)|9(?=8)){5}\d$)\d{6}$");

​

            if (!checkPinRegularExpressions.IsMatch(pin))

            {

                Console.WriteLine($"pin {pin} format isn't valid."); 

               //throw new ArgumentException("format pin isn't valid.");

            }

​

        }

    }

​

public class CustomerSetPinMobile

{

     public Guid CustomerId {get;set;}

     public PinMobile Pin {get;set;}

}