My Singleton in C#

最新推荐文章于 2025-08-21 19:38:35 发布

beautyispower

最新推荐文章于 2025-08-21 19:38:35 发布

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CC 4.0 BY-SA版权

文章标签： c# class system string null

本文链接：https://blog.youkuaiyun.com/beautyispower/article/details/65379

博客展示了一段C#代码，实现了单例模式。定义了SingletonPage类，通过保护构造函数确保单例，提供NewCheckOutPage方法创建实例。还包含TestApp类进行测试，多次调用创建实例方法，验证单例模式的效果。

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//MySingleton
using System;
//SingletonPage Class
class SingletonPage
{
//Fields
protected static SingletonPage checkoutpage;

//Constructor is protected to ensure Singleton
protected SingletonPage()
{
Console.WriteLine("if you see this line,then the only one instence is created!");
}

//Use this to Create SingletonPage instance
public static SingletonPage NewCheckOutPage()
{
  if (checkoutpage==null)
     checkoutpage= new SingletonPage();
  return checkoutpage;
}

};
//-------------------------------------End of SingletonPage Class

//TestApp
class TestApp
{
public static void Main(string[] args)
{
Console.WriteLine("'create' pagea:");
SingletonPage pagea=SingletonPage.NewCheckOutPage();

        Console.WriteLine("'create' pageb:");
  SingletonPage pageb=SingletonPage.NewCheckOutPage();

  Console.WriteLine("'create' pagec:");
  SingletonPage pagec=SingletonPage.NewCheckOutPage();

  Console.WriteLine("'create' paged:");
  SingletonPage paged=SingletonPage.NewCheckOutPage();

while(true){}
}
};