Powerful JetBrains: Visual Studio + ReSharper

AfterRefactoring.cs

using System;

namespace PowerfulJetBrains
{
    public class ContactInfo
    {
        public ContactInfo(string email, string phone, string address)
        {
            Email = email;
            Phone = phone;
            Address = address;
        }

        public string Email { get; private set; }
        public string Phone { get; private set; }
        public string Address { get; private set; }
    }

    public class Candidate
    {
        public ContactInfo ContactInfo { get; }

        public Candidate(string account, string name, DateTime birthday, ContactInfo contactInfo)
        {
            Account = account;
            Name = name;
            Birthday = birthday;
            ContactInfo = contactInfo;
        }

        public string Account { get; private set; }
        public string Name { get; private set; }
        public DateTime Birthday { get; private set; }

        public void AddCandidate()
        {
            Console.WriteLine(
                $"account:{this.Account}, name:{this.Name}, birthday:{this.Birthday}," +
                $" email:{ContactInfo.Email}, phone:{ContactInfo.Phone}, address:{ContactInfo.Address}");

            //Console.WriteLine(
            //    $"account:{this.Account}, name:{this.Name}, birthday:{this.Birthday}, email:{this.Email}, phone:{this.Phone}, address:{this.Address}");
        }
    }

    public class Resume
    {
        public void Scan()
        {
            new Candidate("91chen",
                "Joey Chen",
                new DateTime(1991, 9, 1),
                new ContactInfo("[email protected]", "0991919191", "Taipei City-No.91")).
                AddCandidate();

            //new Candidate("91chen",
            //    "Joey Chen",
            //    new DateTime(1991, 9, 1),
            //    "[email protected]",
            //    "0991919191",
            //    "Taipei City-No.91").AddCandidate();

            //AddCandidate(new Candidate("91chen",
            //    "Joey Chen",
            //    new DateTime(1991, 9, 1),
            //    "[email protected]",
            //    "0991919191",
            //    "Taipei City-No.91"));

            //AddCandidate("91chen",
            //    "Joey Chen",
            //    new DateTime(1991, 9, 1),
            //    "[email protected]",
            //    "0991919191",
            //    "Taipei City-No.91"); 
        }
    }
}

BeforeRefactoring.cs

using System;

namespace PowerfulJetBrains
{
    public class Resume
    {
        public void Scan()
        {
            AddCandidate("91chen",
                "Joey Chen",
                new DateTime(1991, 9, 1),
                "[email protected]",
                "0991919191",
                "Taipei City-No.91");

        }

        public void AddCandidate(string account, string name, DateTime birthday, string email, string phone, string address)
        {
            Console.WriteLine(
                $"account:{account}, name:{name}, birthday:{birthday}, email:{email}, phone:{phone}, address:{address}");
        }
    }
}