Inheritance and Polymorphism

Base Classes

A derived class inherits members from a base class.

Base Classes

BaseClasses.cs 
using System;

class Animal
{
    public string Name { get; set; } = "";

    public string Label()
    {
        return "animal:" + Name;
    }
}

class Dog : Animal
{
}

class Program
{
    static void Main()
    {
        string name = ;
        Dog dog = new Dog();
        dog.Name = name;
        string label = dog.Label();

        Console.WriteLine($"name={dog.Name}");
        Console.WriteLine($"label={label}");
    }
}

using System;

class Animal
{
    public string Name { get; set; } = "";

    public string Label()
    {
        return "animal:" + Name;
    }
}

class Dog : Animal
{
}

class Program
{
    static void Main()
    {
        string name = ;
        Dog dog = new Dog();
        dog.Name = name;
        string label = dog.Label();

        Console.WriteLine($"name={dog.Name}");
        Console.WriteLine($"label={label}");
    }
}

using System;

class Animal
{
    public string Name { get; set; } = "";

    public string Label()
    {
        return "animal:" + Name;
    }
}

class Dog : Animal
{
}

class Program
{
    static void Main()
    {
        string name = ;
        Dog dog = new Dog();
        dog.Name = name;
        string label = dog.Label();

        Console.WriteLine($"name={dog.Name}");
        Console.WriteLine($"label={label}");
    }
}
inheritance Inheritance lets one class reuse behavior from another class.