设计模式学习笔记——代理模式

/// <summary>
    /// 抽象实体，定义真实实体与代理的公共接口
    /// </summary>
    public interface ISubject
    {
        void Function1();
        void Function2();
    }
/// <summary>
    /// 真实实体，真正的功能实现者
    /// </summary>
    public class RealSubject:ISubject
    {

        public void Function1()
        {
            Console.WriteLine("This is the first function.");
        }

        public void Function2()
        {
            Console.WriteLine("This is the second function.");
        }
    }
/// <summary>
    /// 代理，用来访问真实的实体
    /// </summary>
    public class Proxy : ISubject
    {
        /// <summary>
        /// 保存一个真实实体，用以在代理中访问真实实体的功能。
        /// </summary>
        private RealSubject realSubject;

        public Proxy()
        {
            realSubject = new RealSubject();
        }

        /// <summary>
        /// 实现与Subject相同的接口，实际调用的是RealSubject的Function1()
        /// </summary>
        public void Function1()
        {
            realSubject.Function1();
        }

        /// <summary>
        /// 实现与Subject相同的接口，实际调用的是RealSubject的Function2()
        /// </summary>
        public void Function2()
        {
            realSubject.Function2();
        }
    }
class Program
    {
        static void Main(string[] args)
        {
            // 实例化代理
            ISubject subjectProxy = new Proxy();

            // 通过代理调用具体功能
            subjectProxy.Function1();
            subjectProxy.Function2();

            Console.Read();
        }
    }