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OOPS in C#
C# Data Types
Boxing and Unboxing in C#
Garbage Collection in C#
C# - Conditional Statements
C# - Loops
Interfaces in C#
Generics in C#
Collections in C#
C# 8.0 new features
C# Singleton Design Pattern
C# Factory Design Pattern
LINQ in C#
C# - Program to Find Prime Numbers
C# - Fibonacci Sequence
C# - Factorial of a number
C# - Recursive methods
C# - Anonymous Methods
C# - String Methods
C# TDD - XUnit
C# TDD - NUnit
C# Multiton Design Pattern
C# Facade Design Pattern
C# Abstract Factory Design Pattern
C# Decorator Design Pattern
C# Composite Design Pattern

Interfaces in C#



In C#, interfaces are essentially contracts that define a set of methods, properties, events, or indexers without implementing them. They are a core part of C# and allow for a form of multiple inheritance, which is crucial for designing flexible and reusable code. Let's break down their key features:

  1. Method Signatures: Interfaces contain method signatures without any body. Classes that implement the interface must define the behavior of these methods.

    csharp
    public interface IAnimal
    {
        void Eat();
        void Sleep();
    }
    
  2. Properties: Interfaces can include property definitions. These properties don’t have the implementation details—just the accessors.

    csharp
    public interface IVehicle
    {
        int Speed { get; set; }
    }
    
  3. Events: Interfaces can also declare events, allowing classes to provide an event handling mechanism.

    csharp
    public interface IButton
    {
        event EventHandler Clicked;
    }
    
  4. Indexers: An interface can define indexers that the implementing class will need to implement.

    csharp
    public interface IDataContainer
    {
        string this[int index] { get; set; }
    }
    
  5. Multiple Implementations: A class can implement multiple interfaces, allowing for more reusable and modular code.

    csharp
    public class Car : IVehicle, ISound
    {
        public int Speed { get; set; }
        public void MakeSound() => Console.WriteLine("Vroom!");
    }
    
  6. Interface Inheritance: Just like classes, interfaces can inherit from other interfaces. This allows for creating more complex and hierarchical interface structures.

    csharp
    public interface IMovable
    {
        void Move();
    }
    
    public interface IFlyable : IMovable
    {
        void Fly();
    }
    

Interfaces are a powerful tool in C# that promote decoupling and high cohesion within your projects, leading to cleaner and more maintainable code. If you have any specific scenarios or additional questions, feel free to ask!




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