C#实现单件模式的三种常用方法
时间：2020-12-15 01:55:06|栏目：.NET代码|点击： 次
本文实例讲述了C#实现单件模式的三种常用方法。分享给大家供大家参考。具体分析如下：
单件模式是一种设计模式，即保持同时只能创建一个实例，下面列出了C#实现单件模式的三种方法
方法1
public sealed Class Singleton
{
private static ReadOnly Singleton instance = new Singleton();
private Singleton(){}
public static Singleton Instance
{
get
{
return instance;
}
}
}
方法2
public sealed Class ClassicSingleton
{
private static ClassicSingleton instance;
private static object SyncRoot = new Object ();
private ClassicSingleton(){}
public static ClassicSingleton Instance
{
get
{
if(instance == null)
{
lock (SyncRoot)
{
if(instance == null)
{
instance = new ClassicSingleton ();
}
}
}
return instance;
}
}
}
方法3
public Class Singleton
{
private static Singleton instance;
// Added a static mutex for synchronising use of instance.
private static System.Threading.Mutex mutex;
private Singleton(){}
static Singleton ()
{
instance = new Singleton();
mutex = new System.Threading.Mutex();
}
public static Singleton Acquire()
{
mutex.WaitOne ();
return instance;
}
// Each call to Acquire () requires a call to Release()
public static void Release()
{
mutex.ReleaseMutex();
}
}
希望本文所述对大家的C#程序设计有所帮助。
