Question

怎么使用C#实现单例类的继承

Answer 1

public class SingletonExample<T> where T : class, new()
{
    private static T _instance;
    private static readonly object syslock = new object();
    public static T getInstance()
    {    //线程安全锁
        if (_instance == null)
        {
            lock (syslock)
            {
                if (_instance == null)
                {
                    _instance = new T();
                }
            }
        }
        return _instance;
    }  
}

子类要泛型一下

public class Two : SingletonExample<Two>
{
    public void Show()
    {
        Console.WriteLine("Two Sub class.......");
    }
}

调用

Two.getInstance().Show();