怎么实现一个类 无法禁止通过new来实例化?
怎么实现一个类 无法禁止通过new来实例化?
[解决办法]
把构造函数私有化
public class clsClass
{
private clsClass()
{
}
}
[解决办法]
构造函数私有呗
[解决办法]
非抽象类，非静态类，构造函数私有化
典型的就是单例模式，通过静态方法来获取实例

public class Singleton
{
        private static Singleton instance;

        private Singleton()
        {
        
        }

        public static Singleton GetInstance()
        {
                if(instance==null)
                {
                        instance=new Singleton();
                }
                return instance;
        }
}

public class testClass
{
    private testClass()
    {
    }
    private static object _obj = new object();
    private static testClass _instance = null;
    public static testClass Instance()
    {
        if (_instance == null)
        {
            lock (_obj)
            {
                if (_instance == null)
                {
                    _instance = new testClass();
                }
            }
        }
        return _instance;
    }
}