how can vb.net make inherit class with selected variable from base calss-CodePudding

I need to make an inherited class from a base class with a selected variable. for example, if the base class have 3 variable name, age, marks but inherit class must have name and marks only

how can we do it

CodePudding user response：

When designing object-oriented code, subclasses should be the specializations. The situation you describe makes the base class the specialization because it has more specific requirements than the subclass.

There is a principle called the "Liskov Substitution Principle" that says all subclasses should work where the base class works - and this wouldn't be the case as calling subclass.age would fail.

Instead, the base class should have the two common properties, and there should be a subclass that represents the extended class that represents the situation where an age would be used.

Score

Name
Marks

AgedScore extends Score

The names are examples here, ideally you'd name them after what they relate to in the business domain.