What is the use of subclass constructor in C#?

When a subclass is instantiated, the standard behaviour is for the default constructor of the base class to be called automatically. In this way, the base constructor can initialise the base class before the subclass’s constructor is executed.

What is a subclass constructor?

A subclass inherits all the members (fields, methods, and nested classes) from its superclass. Constructors are not members, so they are not inherited by subclasses, but the constructor of the superclass can be invoked from the subclass.

What is the role of a subclass constructor?

3. Subclass Constructors. This constructor explicitly initializes the cx and cy fields newly defined by PlaneCircle, but it relies on the superclass Circle() constructor to initialize the inherited fields of the class. To invoke the superclass constructor, our constructor calls super().

Can subclass have different constructor?

A subclass needs a constructor if the superclass does not have a default constructor (or has one that is not accessible to the subclass). If the subclass has no constructor at all, the compiler will automatically create a public constructor that simply calls through to the default constructor of the superclass.

Can a class have multiple constructors C#?

A user can implement constructor overloading by defining two or more constructors in a class sharing the same name. C# can distinguish the constructors with different signatures. i.e. the constructor must have the same name but with different parameters list.

How do you write a constructor for a subclass?

Subclass Constructors Invocation of a superclass constructor must be the first line in the subclass constructor. super(); or: super(parameter list);

Do subclasses inherit private methods?

No, private fields are not inherited. The only reason is that subclass can not access them directly.

Can we have two constructors in a class?

A class can have multiple constructors that assign the fields in different ways. Sometimes it’s beneficial to specify every aspect of an object’s data by assigning parameters to the fields, but other times it might be appropriate to define only one or a few.