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

Methods and functions

In C#, methods and functions are used to encapsulate a block of code that performs a specific task. They provide a way to organize and reuse code by defining a set of instructions that can be called and executed from different parts of a program. Here’s an overview of methods and functions in C#:

  1. Method Declaration:

A method is declared with a name, optional parameters, return type, and a block of code.

Example

// Method with no parameters and no return value

void PrintHello()

{

    Console.WriteLine(“Hello!”);

}

// Method with parameters and a return value

int AddNumbers(int a, int b)

{

    return a + b;

}

  1. Method Parameters:

Parameters are placeholders that allow you to pass data into a method.

Parameters can be of any data type, and multiple parameters can be separated by commas.

Example

void Greet(string name)

{

    Console.WriteLine(“Hello, ” + name + “!”);

}

void Multiply(int a, int b)

{

    int result = a * b;

    Console.WriteLine(“Result: ” + result);

}

  1. Return Type:

The return type specifies the type of value that a method returns after executing its code.

Use the void keyword for methods that do not return a value.

Example:

int GetSum(int a, int b)

{

    return a + b;

}

void PrintMessage(string message)

{

    Console.WriteLine(message);

}

  1. Calling Methods:

To execute a method, you need to call it by its name, passing any required arguments.

Example:

PrintHello();       // Calling a method with no parameters

Greet(“John”);      // Calling a method with a parameter

Multiply(3, 4);     // Calling a method with multiple parameters

int sum = GetSum(2, 3);   // Calling a method with a return value

  1. Method Overloading:

Method overloading allows you to define multiple methods with the same name but different parameter lists.

The compiler determines which method to call based on the arguments provided.

Example

void PrintNumber(int number)

{

    Console.WriteLine(“Number: ” + number);

}

void PrintNumber(double number)

{

    Console.WriteLine(“Number: ” + number);

}

  1. Main Method:

The Main method is the entry point of a C# program and is required for execution.

It serves as the starting point from which the program’s execution begins.

Example:

static void Main(string[] args)

{

    // Code to execute when the program starts

}

Methods and functions play a crucial role in organizing and structuring code in C#. They allow you to break down complex tasks into smaller, manageable parts and promote code reuse and maintainability.