class Client

{

    void Operation()

    {

        Prototype prototype = new ConcretePrototype1(1);

        Prototype clone = prototype.Clone();

        prototype = new ConcretePrototype2(2);

        clone = prototype.Clone();

    }

}

​

abstract class Prototype

{

    public int Id

    {

        get;

        private set;

    }

​

    public Prototype(int id)

    {

        this.Id = id;

    }

​

    public abstract Prototype Clone();

}

​

class ConcretePrototype1 : Prototype

{

    public ConcretePrototype1(int id): base (id)

    {

    }

​

    public override Prototype Clone()

    {

        return new ConcretePrototype1(Id);

    }

}

​

class ConcretePrototype2 : Prototype

{

    public ConcretePrototype2(int id): base (id)

    {

    }

​

    public override Prototype Clone()

    {

        return new ConcretePrototype2(Id);

    }

}