Singleton Pattern & Prototype Pattern 学习笔记（代码）

Client
using System;
using System.Collections.Generic;
using System.Text;

namespace CSharp.DesignPattern.Prototype
{
    public class Client
    {
        public bool Main(string colorName)
        {
            ColorManager colorManager = ColorManager.Instance ;

            if (!colorManager.Contains(colorName))
            {
                Console.WriteLine("Please add the color!");
                return false;
            }
            
            ConcreteColorPrototype color = (ConcreteColorPrototype)colorManager[colorName].Clone();
            color.Display(colorName);
            return true;
        }

        public void AddColor(string colorName, int red, int green, int blue)
        {
            ColorManager colorManager = ColorManager.Instance;
            colorManager.Add(colorName, new ConcreteColorPrototype(red, green, blue));    
        }
    }
}

ColorManager
using System;
using System.Collections.Generic;
using System.Text;
using System.Collections;
namespace CSharp.DesignPattern.Prototype
{
    public sealed class ColorManager
    {
        Hashtable colors = new Hashtable();

        private static readonly ColorManager instance = new ColorManager();

        public static ColorManager Instance
        { 
            get
            {
                return instance;
            }
        }

        public ColorManager()
        {
            Console.WriteLine("for test");
        }

        public ColorPrototype this[string colorName]
        {
            get
            {
                return (ColorPrototype)this.colors[colorName];
            }
        }

        public void Add(string colorName,ConcreteColorPrototype value)
        {
            if (!Contains(colorName))
            {
                colors.Add(colorName, value);
            }
            
        }

        public bool Contains(string colorName)
        {
            return colors.Contains(colorName);
        }
    }
}

ConcreteColorPrototype
using System;
using System.Collections.Generic;
using System.Text;

namespace CSharp.DesignPattern.Prototype
{
    public class ConcreteColorPrototype:ColorPrototype 
    {
        private int _red;
        private int _blue;
        private int _green;

        public ConcreteColorPrototype(int red, int green, int blue)
        {
            this._red = red;
            this._green = green;
            this._blue = blue;
        }

        public override ColorPrototype Clone()
        {
            return (ColorPrototype)this.MemberwiseClone();
        }

        public void Display(string colorName)
        {
            Console.WriteLine("{0}'s RGB Values are: {1},{2},{3}",
                                colorName, _red, _green, _blue);
        }
    }
}

ColorPrototype
using System;
using System.Collections.Generic;
using System.Text;

namespace CSharp.DesignPattern.Prototype
{
    public abstract class ColorPrototype
    {
        public abstract ColorPrototype Clone();
    }
}

以上只是个人练习写的代码。不具有任何的参考性。