十.原型模式

原型模式：

       在A a=new A();A b=a;是传引用而不是传值引用。

       我们在A中加入clone（）方法，使其传值。这就是原型

 

//原型类

   abstract class Prototype

    {

       private string id;

       public Prototype(string id)

       {

           this.id = id;

       }

       public string Id

       {

            get { return id; }

       }

       //抽象类的关键是具有此虚方法

       public abstract Prototype Clone();

}

//具体原型类

   class ConcretePrototypel:Prototype

    {

       public ConcretePrototypel(string id)

           : base(id)

       { }

       //实现浅克隆，复制值类型，复制引用，但不复制引用对象

       public override Prototype Clone()

       {

           return (Prototype)this.MemberwiseClone();

       }

}

Program:

       ConcretePrototypelp1 = new ConcretePrototypel("i");

   ConcretePrototypel c1 = (ConcretePrototypel)p1.Clone();

Console.WriteLine("cloned:{0}",c1.Id);

 

实现深克隆：

//工作经历

   class WorkExperience

    {

       private string workDate;

       public string WorkDate

       {

           get { return workDate; }

           set { workDate = value; }

       }

 

        private string company;

       public string Company

       {

           get { return company; }

           set { company = value; }

       }

       //实现在引用此实力的克隆

       public object Clone()

       {

           return (object)this.MemberwiseClone();

       }

}

简历：

       classResume

    {

       private string name;

       private string sex;

       private string age;

       private WorkExperience work;

 

       public Resume(string name)

       {

           this.name = name;

           work = new WorkExperience();

       }

       //提供clone方法的私有构造函数，以便克隆工作经历数据

       privateResume(WorkExperience work)

       {

           this.work = (WorkExperience)work.Clone();

       }

 

       public void SetPersonalInfo(string sex, string age)

        {

           this.sex = sex;

           this.age = age;

       }

       public void SetWorkExperience(string workDate, string company)

       {

           work.WorkDate = workDate;

           work.Company = company;

       }

       public void Display()

       {

           Console.WriteLine("{0} {1} {2}",name,sex,age);

           Console.WriteLine("工作经历:{0} {1}",work.WorkDate,work.Company);

       }

 

       public object Clone()

       {

           Resume obj = new Resume(this.work);

            obj.name = this.name;

           obj.sex = this.sex;

           obj.age = this.age;

           return obj;

       }

    }

Program：

class Program

    {

       static void Main(string[] args)

       {

           Resume a = new Resume("大鸟");

           a.SetPersonalInfo("男","29");

           a.SetWorkExperience("1998-2000","xxx公司");

 

           Resume b = (Resume)a.Clone();

           b.SetWorkExperience("1998-2006","yyy公司");

 

           a.Display();

           b.Display();

 

           Console.ReadKey();

       }

    }