What is .NET?

-

1️⃣ What is .NET?

🔹 .NET (Dotnet) is a free, open-source, cross-platform framework developed by Microsoft for building various types of applications, including:

  • Web Applications
  • Desktop Applications
  • Cloud Services
  • Mobile Apps
  • Game Development
  • IoT Applications

🔹 Key Characteristics of .NET
✅ Cross-platform – Runs on Windows, macOS, and Linux
✅ Language Interoperability – Supports multiple languages, including C#, F#, and VB.NET
✅ High Performance – Optimized runtime for fast execution
✅ Managed Code – Uses the Common Language Runtime (CLR)
✅ Automatic Memory Management – Uses Garbage Collection (GC)

2️⃣ Evolution of .NET

  • .NET Framework (2002) – The original, Windows-only version
  • .NET Core (2016) – A cross-platform, modular, open-source version
  • .NET 5+ (2020-Present) – A unified platform (merging .NET Framework and .NET Core)

🔹 Current Version: .NET 8 (Latest as of 2024)
🔹 Major Components of .NET

  • .NET Runtime – Executes C# applications
  • .NET SDK – Tools for building, running, and publishing applications
  • ASP.NET Core – Framework for web applications
  • Entity Framework Core (EF Core) – ORM for database interactions
  • ML.NET – Machine learning framework

3️⃣ Understanding the Common Language Runtime (CLR)

The CLR (Common Language Runtime) is the heart of .NET that:

  • Compiles C# code into Intermediate Language (IL)
  • Uses Just-In-Time (JIT) Compilation to convert IL into machine code
  • Provides Garbage Collection (GC) for automatic memory management
  • Handles Exception Management & Security

4️⃣ Understanding the .NET Libraries

🔹 Base Class Library (BCL) – A set of built-in classes for:

  • Data Types & Collections (string, List<T>, Dictionary<K,V>)
  • File & I/O Operations (File, StreamReader, StreamWriter)
  • Networking (HttpClient, Socket)
  • Threading & Parallel Execution (Task, Thread, Parallel)

🔹 NuGet Packages – Additional libraries you can install from NuGet Package Manager
Example:

dotnet add package Newtonsoft.Json

5️⃣ Introduction to C#

🔹 C# (C-Sharp) is a modern, object-oriented programming language developed by Microsoft for building applications on the .NET platform.

🔹 Why Learn C#?
✅ Easy to Learn – Clean syntax, similar to Java and C++
✅ Strongly Typed – Helps catch errors at compile-time
✅ Object-Oriented – Supports encapsulation, inheritance, and polymorphism
✅ Versatile – Used in web, desktop, mobile, and game development
✅ Backed by Microsoft – Continuous improvements and community support

6️⃣ C# Compilation Process

🔹 C# Code Execution Flow:
1️⃣ C# Code (.cs file) ➝ Compiled into Intermediate Language (IL)
2️⃣ IL Code ➝ Executed by the .NET CLR using Just-In-Time (JIT) Compiler
3️⃣ Machine Code ➝ Runs on the CPU

Example:

using System;

class Program
{
    static void Main()
    {
        Console.WriteLine("Hello, .NET and C#!");
    }
}

🔹 Compile and Run:

dotnet run

7️⃣ C# Language Features

✔ Variables & Data Types (int, double, string, bool, object)
✔ Control Flow (if, switch, for, while)
✔ Functions & Methods (Method Overloading, Recursion)
✔ OOP Principles (Encapsulation, Inheritance, Polymorphism, Abstraction)
✔ Asynchronous Programming (async/await, Task<T>)
✔ Exception Handling (try, catch, finally)
✔ LINQ (Language Integrated Query) (from x in list where x > 10 select x)

8️⃣ Frameworks & Technologies Built with C#

🔹 Web Development – ASP.NET Core
🔹 Desktop Applications – WPF, WinForms, MAUI
🔹 Mobile Development – .NET MAUI, Xamarin
🔹 Game Development – Unity (Uses C# as scripting language)
🔹 Cloud Computing – Azure Functions, Serverless Apps
🔹 Machine Learning – ML.NET
🔹 Database Development – Entity Framework Core, Dapper

9️⃣ C# Development Tools

🔹 Integrated Development Environments (IDEs):

  • Visual Studio (Recommended)
  • Visual Studio Code
  • JetBrains Rider

🔹 Package Managers:

  • NuGet (for libraries)
  • .NET CLI (dotnet add package <package-name>)

🔹 Debugging Tools:

  • Visual Studio Debugger
  • dotnet trace, dotnet dump

🔚 Conclusion

Understanding .NET and C# is the foundation for becoming a skilled C# developer. Once you're comfortable with these concepts, you can move on to deeper topics like object-oriented programming, async programming, databases, and web development with ASP.NET Core.

Comments

Post a Comment

Popular posts from this blog

Car Wash System vb.net

-
Image
This software consists of a database that save the registration number of every vehicle being wash along side with the date, type of wash made and price Screen Shot Source Code To view records in the database: Dim conn As OleDbConnection = New OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=|DataDirectory|\washRcd.accdb;Persist Security Info=False") Dim sql As String sql = " SELECT * FROM tblwash" conn.Open() Dim dt As New DataTable Dim cmd2 As New OleDb.OleDbDataAdapter(sql, conn) cmd2.Fill(dt) DataGridView1.DataSource = dt DataGridView1.Refresh() conn.Close() To insert new record in the database: Private Sub insert() Dim conn As OleDbConnection = New OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=|DataDirectory|\washRcd.accdb;Persist Security Info=False") Dim updateSql As String = String.Format(...
Read more

C# Windows Form : PetCare

-
Image
A desktop application using C# as technology. the application is titled as "PETCARE" a system that a pet shop or veterinary can use it to store basic information about the pet's owner, details about the pet and the purpose of the visit to the veterinary or pet shot. The system also contained a stock management module that is used to track pet food purchased by a particular customer Screen Shot You can login both as a staff or as the admin. the admin has the privilege to register new staff and view details about transaction and other sensitive information. The system encrypt user password using MD5 algorithm The home screen of the application You can either add a new pet with its owner details or add another pet belonging to the same owner. both can be done using the same form below. and each pet owner will be given a reference number. Veterinary can use the application to store information about treatment done for a particular pet Can t...
Read more

Student Information System - AngularJS , ASP.NET API, C#

-
Image
Web based application the student information system is a small application that allows user to register and login to view information about a particular student and can perform several actions like Login and register to the application View students  Add new student Delete a particular student Update user information Screen Shot Project architecture routing.js, config.js and app.js allow the application to route from one partial view to another and config.js is used to save all the endpoint needed to access the API.   For separation of concerns, in the solution panel separate partial views, controller and services in different directories and reference it in index.html to enable angular to load all the files required Login process login.html LoginController.js Using $resource from AngularJS to make an API call and response  with a user details model UserViewModel and UserDetailsViewModel Using Unity fo...
Read more