设计模式-单例模式(四)
1.单例(满足多线程)
public class
{ private static SingelDesign _intance = null; private static readonly object _lock = new object(); public static SingelDesign Intance { get { return _intance; } set { _intance = value; } } public static SingelDesign Get() { if (Intance == null)//这个判断为了多线程节省资源 { lock (_lock)//加锁为了线程安全 { if (Intance == null) { Intance = new SingelDesign(); } } } return Intance; } private SingelDesign() { } }
2.调用
SingelDesign.Get();