单(Singleton创建模式)c#简单的例子
当需要生成一个实例，可单发模式
样品可以在短短的球员中产生，玩家和测试。单线程例子，如以下：
namespace singletonpattern
{
public partial class SingletonForm : Form
{
public SingletonForm()
{
InitializeComponent();
}
private void btnDisplay_Click(object sender, EventArgs e)
{
player player1 = player.GetPlayer;
player1.jump = "跳一跳";
player1.move = "走一走";//对player1赋值
listBox1.Items.Add("------play1.jump,player1.move-------");
listBox1.Items.AddRange(new string[] { player1.jump, player1.move });
player player2 = player.GetPlayer;//未对player2赋值，但值与player1同样
listBox1.Items.Add("------play2.jump,player2.move-------");
listBox1.Items.AddRange(new string[] { player2.jump, player2.move });
player1.jump = "跳一跳,跑一跑";
player1.move = "走一走，看--看";//改动的player1。player2也被改动，说明是同一个类
listBox1.Items.Add("------play2.jump,player2.move-------");
listBox1.Items.AddRange(new string[] { player2.jump, player2.move });
listBox1.Items.Add(object.ReferenceEquals(player1, player2));//显示为true,说明两个为同一个类
}
}
class player
{
private player()//单例第一步，设构造函数为私有的。
{ } private static player getplayer; public static player GetPlayer//第二步获取单例 { get { if (getplayer == null)//推断是否实例唯一 { getplayer = new player(); } return getplayer; } } public string jump { get; set; }//单例中的属性 public string move { get; set; } } }
当中 private static player getplayer;
public static player GetPlayer//第二步获取单例
{
get
{
if (getplayer == null)//推断是否实例唯一
{
getplayer = new player();
}
return getplayer;
}
}
可简化为一句
public static readonly player GetPlayer = new player();//简化单例模式
此文件由朱朱编写，转载请注明出自朱朱家园http://blog.csdn.net/zhgl7688
版权声明：本文博客原创文章。博客，未经同意，不得转载。
本文转自mfrbuaa博客园博客，原文链接：http://www.cnblogs.com/mfrbuaa/p/4745922.html，如需转载请自行联系原作者
