是否可以覆盖密封类的方法？

Question

In WinRT (C#, XAML), ScrollViewer is a sealed class, and I can't extend it, but I need to overwrite some methods (for example: ScrollToHorizontalOffset ).

Is it possible to override methods of a sealed class?

Answer 1

No - in order to override a method, you have to derive from it, which you can't do when the class is sealed.

Basically, you need to revisit your design to avoid this requirement...

Answer 2

You can't inherit from a sealed class, so no inheritance, no override.

See: override C#

The override modifier is required to extend or modify the abstract or virtual implementation of an inherited method, property, indexer, or event.

See: sealed C#

When applied to a class, the sealed modifier prevents other classes from inheriting from it.

Answer 3

As the word "sealed" itself indicates that , it is protected from being inherited or overridden

So, No inheritance implies no Overriding.

please find this link to find more details about sealed class in detail.

Answer 4

密封本身意味着类不能被继承，那些不能被继承的类意味着不能在派生类中访问该类的任何属性。