Question

Reading a book it says that the derived class inherits all fields and methods…but what about properties??

Answer 1

A derived class inherits all methods fields and, yes, properties too, although private methods, fields and properties are generally not directly accessible or visible from the derived class unless it is nested in it’s superclass (the parent). Constructors and finalizers, however, are not inherited so when you derive a type you always need to code any constructors that are required for your object initialization, even if it just calls down to the base class’s constructor.

However, it is generally considered good practice to make your fields private and allow access to them, if necessary, to derived classes via properties. That way it allows you, the author of the base class, to have confidence that you control the way in which the classes state (the value of it’s fields) can change.

To illustrate you question about properties:

public class Person 
{
    public Name { get; set; }
    public void Greet()
    {
      Console.WriteLine("Hello");
    }
}

public class Child : Person
{
   public Nickname { get; set;}
}

In the above example, the derived class, Child, has a nickname (a property) in addition to its derived property (Name) and its derived method (Greet).