C# get set方法

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

namespace GetSetTest

{

    class A {

        private String username = "username";

        private String password;

        public String Username

        {

            get

            {

                return username;

            }

        }

        public String Password

        {

            get

            {

                return password;

            }

            set

            {

                this.password = value;

            }

        }

    }

    class Program

    {

        static void Main(string[] args)

        {

            A a = new A();

            String username = a.Username;

            //a.Username = "11";//出错，因为没有提供set方法

            Console.WriteLine(username);

            //可以改变password

            a.Password = "";

            Console.WriteLine(a.Password);

            Console.Read();

        }

    }

}