C#的单例模式Singleton

参考：http://msdn.microsoft.com/zh-cn/library/ms998558.aspx

//C#中的单例模式：http://msdn.microsoft.com/zh-cn/library/ms998558.aspx //1.静态初始化 public sealed class Singleton { private static readonly Singleton instance = new Singleton(); private Singleton() { } public static Singleton Instance { get { return instance; } } } //2.多线程 Singleton using System; public sealed class Singleton { private static volatile Singleton instance; private static object syncRoot = new Object(); private Singleton() { } public static Singleton Instance { get { if (instance == null) { lock (syncRoot) { if (instance == null) instance = new Singleton(); } } return instance; } } }

第1种适合一般情况；第2种适合多线程同步的情况。