C# 两行代码实现 延迟加载的单例模式（线程安全）

 1     public class LazySingleton
 2     {
 3         //Lazy singleton
 4         private LazySingleton() { }
 5         public static readonly Lazy<LazySingleton> instance = new Lazy<LazySingleton>(() => { return new LazySingleton(); });
 6 
 7         //not lazy Singleton
 8         //public static readonly LazySingleton instance = new LazySingleton();
 9 
10         public String Name { get; set; }
11     }
12 
13     public class LazySingletonDemo
14     {
15         public static void Execute()
16         {
17 
18             if (!LazySingleton.instance.IsValueCreated)
19                 Console.WriteLine("LazySingleton is not initialized");
20 
21             LazySingleton.instance.Value.Name = "HK";
22 
23             Console.WriteLine(LazySingleton.instance.Value.Name);
24         }
25     }