//单例模式扩展
private static void CreateAppConfigExtend()
{
HashSet <AppConfigExtend> hashset = new HashSet <AppConfigExtend>();
for (int i = 0; i < 10; i++)
{
hashset.Add(AppConfigExtend.GetInstance());
}
Console.WriteLine(hashset.Count());//print:3 即全局中AppConfigExtend就只有3个实例对象
Console.ReadKey();
}
//类外方法访问实例的访问点
public static AppConfigExtend GetInstance()
{
if (!dic.ContainsKey(key))
{
dic.Add(key, new AppConfigExtend());
}
AppConfigExtend appConfig = dic[key];
key++;
if (key > MaxInstance)
{
key = 1;
}
return(appConfig);
}
