Inheritance in dotnet framework

Question

Vijay Kumari · Answer

Inheritance is an object-oriented concept that lets a derived class reuse (inherit) the fields, properties, and methods of a base class, promoting code reusability and a clear class hierarchy. In .NET you get: Single inheritance: Each class can inherit from one direct base class. Polymorphism: Base-class references can invoke derived-class implementations (via virtual/override). Code Example using System; namespace InheritanceDemo { // Base class public class Animal { public string Name { get; set; } // Virtual method allows overriding in derived classes public virtual void Speak() { Console.WriteLine($"{Name} makes a sound."); } } // Derived class public class Dog : Animal { // Override the virtual method public override void Speak() { Console.WriteLine($"{Name} says: Woof!"); } // New method specific to Dog public void Fetch() { Console.WriteLine($"{Name} is fetching the ball!"); } } class Program { static void Main(string[] args) { // Instantiate derived class Dog myDog = new Dog { Name = "Buddy" }; // Calls overridden method myDog.Speak(); // Output: Buddy says: Woof! // Calls method defined only in Dog myDog.Fetch(); // Output: Buddy is fetching the ball! // Polymorphism: base-class reference to a derived instance Animal pet = new Dog { Name = "Charlie" }; pet.Speak(); // Output: Charlie says: Woof! } } } virtual on the base-class method marks it as overridable. override in the derived class provides a new implementation. You can also add new members (like Fetch()) that are specific to the derived class.

Kiran Kumar · Answer

Hi Vijaya got it thanks but can you provide some good example since I am implementing financial application , for Banking application can I use this feature

Deepak Tewatia · Answer

One class can take features from another class.

Inheritance in dotnet framework

Answers (3)