C # polymorphic implementation

definition

A class has many forms

achieve

Richter conversion

Virtual methods

step

1. The method of the parent marked as virtual methods, using the keyword virtual, this function can be overridden by subclasses


2. Calling

Abstract class

step

1. When a parent does not know how to achieve the abstract method method can be set to


2 calls

interface

step

Roughly the same abstract class