可以确定方法是由派生类调用还是直接调用为自身？ C＃

Question

是否有任何直接的方法来确定派生类是调用基类（非抽象）中的方法还是从创建基类实例的某个地方显式调用？

Answer 1

最简单的方法是使用反射：

public virtual void MyBaseClassMethod()
{
    var currType = this.GetType();
    if (currType == typeof(MyBaseClass))
    { 
        // base class instantiated directly.
    }
}

Answer 2

如果您可以更改代码，则可以执行以下操作...

public MyDerivedClass : MyBaseClass
{
    public override void MyPublicMethod()
    {
        MyPrivateMethod(false);
    }
}

public MyBaseClass   
{
    public virtual void MyPublicMethod()
    {
        MyInternalMethod(true);
    }

    protected void MyInternalMethod(bool isInternal)
    {
        // If you're planning to use isInternal to change the logic based
        // on whether this code has been invoked in the base or subclass
        // you would be infinitely better off overriding that code in the
        // subclass. Or better still don't use generalization at all and
        // use an injection framework and create several implementations
        // of an interface.
    }
}