using System;

using System.Text.RegularExpressions;

​

public class ValidationException : Exception

{

    public ValidationException(string message): base(message)

    {

    }

}

​

public class Validator

{

    string name;

    string email;

    int age;

    public Validator()

    {

        Console.WriteLine("Object is being created");

    }

​

    public void validate(string n, string e, int a)

    {

        if (Regex.Match(n, "^[A-Z][a-zA-Z]*$").Success)

        {

            name = n;

        }

        else

        {

            throw new ValidationException("Name must contain only characters");

        }

​

        if (a > 18 && a < 99)

        {

            age = a;

        }

        else

        {

            throw new ValidationException("Age between 18 and 99");

        }

​

        if (Regex.Match(e, @"^([\w\.\-]+)@([\w\-]+)((\.(\w){2,3})+)$").Success)

        {

            email = e;

        }

        else

        {

            throw new ValidationException("Invalid Email Format");

        }

    }

​

    public void getDetails()

    {

        Console.WriteLine(name);

        Console.WriteLine(email);

        Console.WriteLine(age);

    }

​

    public static void Main()

    {

        Validator a = new Validator();

        try

        {

            a.validate("Jay", "jj@j.in", 21);

            a.getDetails();

        }

        catch (ValidationException e)

        {

            Console.WriteLine(e);

        }

​

    }

}