public static readonly object Locker = new object();//readonly只读 ；const常量
/// <summary>
/// 定义公有方法来生成类的实例
/// </summary>
/// <returns></returns>
public static SingletonDemo GetInstance()
{
//构造函数私有化，外部无法new实例，所以需要提供静态的方法
if (Instance == null)
{
Instance = new SingletonDemo();
}
return(Instance);
}
/// <summary>
/// 线程安全的单例
/// </summary>
/// <returns></returns>
public static SingletonDemo GetInstanceThreadSafe()
{
if (Instance == null)
{
lock (Locker)
{
if (Instance == null)
{
Instance = new SingletonDemo();
}
}
}
return(Instance);
}