C#中的一种Singleton的实现(转)

在CSDN上看到了C#中的Singleton的实现，实用性并不是太大，不过里边结合了泛型和多线程同步技术，觉得不错，记一下

//C#代码

//singleton.cs

using System;

using System.Collections.Generic;

using System.Text;

namespace Singleton

{

public class SingleTon<T>

{

private static Object objLock = new Object();

protected SingleTon() {}

protected static T _instance;

public static T Instance()

{

if(null == _instance)

{

lock(objLock)

{

if(null == _instance) //must do this

_instance = (T)Activator.CreateInstance<T>();

}

}

return _instance;

}

public static void Destroy()

{

_instance = default(T);

}

}

public class Person

{

String m_strName;

int m_nAge;

public void Eat()

{

Console.WriteLine("Eating.. Name: {0}, Age{1}",m_strName,m_nAge);

}

}

}

//Main.cs

namespace Singleton

{

class program

{

static void Main(string[] args)

{

SingleTon<Person>.Instance().Eat();

SingleTon<Person>.Destroy();

}

}

}

转自：http://12115294.qzone.qq.com/blog/27