Course Content
Introduction to C#
What is C#? C# (pronounced "C sharp") is a general-purpose, modern programming language developed by Microsoft as part of its .NET framework. It was first introduced in 2000 and has since become one of the primary languages used for building Windows desktop applications, web applications, and other software solutions on the Microsoft platform. C# is an object-oriented programming (OOP) language that combines the power and flexibility of C++ with the simplicity and ease of use of Visual Basic. It is designed to be a simple, efficient, and type-safe language that enables developers to create robust and scalable applications. Some key features of C# include: • Object-Oriented Programming (OOP): C# supports fundamental OOP concepts such as encapsulation, inheritance, and polymorphism, allowing developers to create modular and reusable code. • Type Safety: C# enforces strict type checking, which helps prevent errors and promotes code reliability. • Garbage Collection: C# includes automatic memory management through a garbage collector, which frees developers from managing memory manually. • Language Integration: C# integrates seamlessly with other .NET languages, allowing developers to leverage existing libraries and components. • Rich Standard Library: C# provides a comprehensive standard library that offers a wide range of functionality for common tasks, including input/output operations, network programming, and database access. • Platform Independence: While C# was initially designed for Windows development, it has expanded its reach through cross-platform frameworks like .NET Core and Xamarin, enabling developers to build applications that run on multiple operating systems, including Windows, macOS, and Linux. Overall, C# is a versatile language that empowers developers to build a variety of software applications, from desktop applications and web services to mobile apps and games, using the .NET framework.
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Setting up the development environment
A key component of C# development is the Visual Studio integrated development environment (IDE). This lesson lets you look into the IDE. You learn how to configure it for C# development.
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Basic syntax and concepts (C# Basics)
This topic contains fundamentals of C# programming
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Classes and objects
Classes and objects In C#, classes and objects are fundamental concepts of object-oriented programming (OOP). They provide a way to define the structure and behavior of objects, which are instances of classes. Here's an overview of classes and objects in C#:
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Advanced topics
Certainly! Here are a few advanced topics in C# that you might find interesting:
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Project organization
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About Lesson

Object-Oriented Programming in C#

Object-oriented programming (OOP) is a programming paradigm that focuses on organizing code into objects, which are instances of classes. C# is a language that fully supports OOP principles, making it well-suited for developing applications using object-oriented concepts. Here are the key aspects of OOP in C#:

Classes and Objects:

  • In C#, classes are used to define the blueprint or template for creating objects.
  • Objects are instances of classes that represent specific entities in your program.
  • Classes encapsulate data (fields) and behavior (methods) related to those entities.

Encapsulation:

    • Encapsulation is the practice of bundling related data (fields) and behavior (methods) within a class.
    • It allows for better organization, code modularity, and protection of data by controlling access through access modifiers.


    Inheritance:

      • Inheritance enables the creation of a class hierarchy, where a derived class inherits properties and behavior from a base class.
      • The derived class can extend the functionality of the base class and override or add new methods.
      • Inheritance promotes code reuse, extensibility, and the “is-a” relationship between classes.

      Polymorphism:

      • Polymorphism allows objects of different classes to be treated as objects of a common base class.
      • It enables the use of base class references to invoke overridden methods or access common properties.
      • Polymorphism facilitates flexibility and code reuse by providing a single interface for multiple implementations.

      Abstraction:

      • Abstraction focuses on defining the essential characteristics and behaviors of an object while hiding the unnecessary details.
      • Abstract classes and interfaces are used to achieve abstraction in C#.
      • Abstract classes provide a blueprint for derived classes, while interfaces define a contract that classes must implement.

      Modifiers:

      • Access modifiers (public, private, protected, internal) control the accessibility of class members (fields, methods, properties) from outside the class.
      • Other modifiers like static, abstract, virtual, sealed, etc., allow for additional control and behavior of classes and members.

      Polymorphic Behavior:

      • C# supports runtime polymorphism through method overriding, allowing derived classes to provide their own implementation of base class methods.
      • C# also supports compile-time polymorphism through method overloading, enabling methods with the same name but different parameters.

      Object-Oriented Design Principles:

        • In addition to the language features, following key design principles of OOP such as SOLID (Single Responsibility, Open/Closed, Liskov Substitution, Interface Segregation, Dependency Inversion) can lead to well-structured, maintainable, and extensible code.

        By leveraging these object-oriented programming concepts in C#, you can create modular, reusable, and easily maintainable code that models real-world entities effectively. OOP promotes code organization, flexibility, and scalability, making it a powerful approach for building robust applications in C#.