c# - 方法重载的基本问题

如果我有一个SubOfParent类(它是Parent的子类)和两个方法:

 public static void doStuff(Parent in) {}

 public static void doStuff(SubOfPArent in) {}

当我传递SubOfParent类型对象时，为什么第一个doStuff会被调用？

感谢您对此的任何见解!

最佳答案

Parent p = new SubOfParent();
SubOfParent s = new SubOfParent();

doStuff(p); //calls doStuff(Parent in)
doStuff(s); //calls doStuff(SubOfParent in)

//If you're working with a parent but need to call the subclass, you need to upcast it.
dostuff(p as SubOfParent);