Why can't a virtual function override an abstract function?

 

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  • Overriding an abstract method with a virtual one 2 answers

    • 一个覆盖它的基本方法的方法是隐式虚拟的（除非用sealed关键字指定），你不需要指定它。

    From MSDN

  • An abstract method is implicitly a virtual method.
  • Abstract method declarations are only permitted in abstract classes.
  • The implementation is provided by an overriding method.
  • Abstract method also can be overridden in an abstract class.
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