01.Person

Person.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace _01.Person
{
   public class Person
    {
        private string name;
        private int age;
        private string email;

        public string Name
        {
            get
            {
                return this.name;
            }
            set
            {
                if (string.IsNullOrEmpty(value))
                {
                    throw new ArgumentNullException();
                }
                else
                {
                    this.name = value;
                }
            }
        }
        public int Age
        {
            get
            {
                return this.age;
            }
            set
            {
                if (value <1 || value>100)
                {
                    throw new ArgumentException("Age are ");
                }
                else
                {
                    this.age = value;
                }
                
            }
        }
        public string Email
        {
            get
            {
                return this.email;
            }
            set
            {
                if (value != null && !value.Contains("@"))
                {
                    throw new ArgumentException("Age are ");
                }
                else
                {
                    this.email = value;
                }
            }
        }
        
        public Person(Person per):this(per.Name,per.Age,per.Email)
        {
           
        }

        public Person (string name,int age,string email)
        {
            this.Name = name;
            this.Age = age;
            this.email = email;
        }

        public Person (string name,int age):this(name,age,null)
        {

        }
        
        public override string ToString()
        {
            return string.Format("{0},{1},{2}",this.Name,Age,Email);
        }
    }
}