using System;

using System.Collections;

using System.Text;

using System.IO;

namespace FlyweightExample

{

    class Program

    {

        static void Main(string[] args)

        {

            Console.WriteLine(GC.GetTotalMemory(false));

            Random rnd = new Random();

            ArrayList al = new ArrayList();

            for (int i = 0; i < 10000; i++)

            {

                string modelName = rnd.Next(2).ToString();

                Model model = ModelFactory.GetInstance().GetModel(modelName);

                //Model model = new Model(modelName);

                al.Add(model);

            }

            Console.WriteLine(GC.GetTotalMemory(false));

            Console.ReadLine();

        }

    }

    class Model

    {

        private byte[] data;

        public Model(string modelName)

        {

            data = File.ReadAllBytes("c:\\" + modelName + ".txt");

        }

    }

    class ModelFactory

    {

        private Hashtable modelList = new Hashtable();

        private static ModelFactory instance;

        public static ModelFactory GetInstance()

        {

            if (instance == null)

                instance = new ModelFactory();

            return instance;

        }

        public Model GetModel(string modelName)

        {

            Model model = modelList[modelName] as Model;

            if (model == null)

                modelList.Add(modelName, new Model(modelName));

            return model;

        }

    }

}