The similarities and differences between the abstract and virtual methods of C # polymorphism ~

Similarities and differences between abstract and virtual methods of polymorphism:

Different points

1, the method keyword is not the same

The method keyword for virtual methods is: virtual.

The method key word of abstract class is: abstract

2. Does the base class method have a method body/implementation

Method of the virtual method: declares and implements the method.

Methods of abstract classes: declaration only, no method body/no implementation.

Common

1, subclass/derived class to override the parent class method: Keyword Overcode

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The similarities and differences between the abstract and virtual methods of C # polymorphism ~