c# Array Part 2 (Using reference types)

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
 
namespace ArraysPart2cs
{
    class Customer
    {
        #region -[Private Member Fields]-
 
        private string FirstName_;
        private string LastName_;
        private string ContactNumber_;
 
        #endregion
 
        //our first constructor
        public Customer()
        {
 
        }
        //our second constructor
        public Customer(string _FirstName, string _LastName, string _ContactNumber)
        {
            this.FirstName_ = _FirstName;
            this.LastName_ = _LastName;
            this.ContactNumber_ = _ContactNumber;
        }
 
        #region -[Properties]-
 
        public string FirstName
        {
            get { return this.FirstName_; }
            set { this.FirstName_ = value; }
        }
 
        public string LastName
        {
            get { return this.LastName_; }
            set { this.LastName_ = value; }
        }
 
        public string ContactNumber
        {
            get { return this.ContactNumber_; }
            set { this.ContactNumber_ = value; }
        }
 
        #endregion
 
        public override string ToString()
        {
            string FullName = string.Concat(this.LastName_, " ", this.FirstName_);
 
            return string.Format("You are : {0}, your contact number: {1}", FullName, this.ContactNumber_);
 
        }
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
 
namespace ArraysPart2cs
{
    class Program
    {
        static void Main(string[] args)
        {
 
            Console.Title = "Arrays Part 2";
 
           //so lets declare an array of customer having 2 elements
 
            Customer[] customer = new Customer[2];
 
            //lets try a short method
 
            customer[0] = new Customer("John Felix", "Cruz", "+639083069011");
 
            Console.WriteLine(customer[0].ToString());
 
            //lets try a long method
 
            customer[1] = new Customer();
 
            customer[1].FirstName = "Jin";
            customer[1].LastName = "Zalzos";
            customer[1].ContactNumber = "+639083069011";
 
            Console.WriteLine(customer[1].ToString());
 
 
            //you may also use array initializer with custom types
 
            Customer[] anotherCustomer = {new Customer("Rhian","Calzado","+63908306911"),
                                          new Customer("B. Togie", "Calzado", "+6301233655")};
 
            Console.WriteLine(anotherCustomer[0]);
 
            Console.ReadKey();
 
        }
    }
}