Singleton設計模式(單實例)

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

//Singleton設計模式(單實例)
namespace ConsoleApplication6
{
    class Program
    {
        static void Main(string[] args)
        {
            //案例：
            Singleton s = Singleton.getSingleton();
            s.name = "asd";
            Singleton s1 = Singleton.getSingleton();
            s1.ShowMsg();
            Console.ReadKey();
        }
    }
    class Singleton
    {
        //靜態類（本身）
        private static Singleton singleton = null;
        //私有構造函數
        private Singleton() { }
        public static Singleton getSingleton()
        {
            if (singleton == null)
                singleton = new Singleton();//實例化
            return singleton;
        }

        public string name { get; set; }
        public void ShowMsg()
        {
            Console.WriteLine(name);
        }
    }
}