Getting Started with .NET Core

 .NET Core is a powerful, open-source, cross-platform framework developed by Microsoft for building modern, high-performance applications. Whether you're interested in web development, APIs, microservices, or cloud-based apps, .NET Core provides the tools and flexibility to build robust solutions across Windows, Linux, and macOS.

If you're new to .NET Core, here’s a simple guide to help you get started.

1. What is .NET Core?

.NET Core is a lightweight, fast, and modular framework that allows developers to build various types of applications. It supports:

  • Web applications using ASP.NET Core
  • Console applications
  • Microservices
  • APIs
  • Cross-platform apps

Unlike the older .NET Framework, .NET Core is designed to be platform-independent, making it ideal for developers working on diverse operating systems.

2. Install .NET Core SDK

To start developing, you’ll need to install the .NET SDK (Software Development Kit):

Go to https://dotnet.microsoft.com

Download and install the latest stable SDK

Verify installation by running:

bash

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dotnet --version

3. Create Your First .NET Core App

Let’s start with a simple console app:

bash

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dotnet new console -n MyFirstApp

cd MyFirstApp

dotnet run

This will display “Hello, World!” in the terminal. The dotnet new command creates a new project, and dotnet run compiles and executes it.

4. Build a Web API with ASP.NET Core

.NET Core is widely used for building APIs. To create one:

bash

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dotnet new webapi -n MyWebAPI

cd MyWebAPI

dotnet run

By default, it sets up a sample RESTful API using controllers and routes. You can test it in a browser or using tools like Postman.

5. Understand the Project Structure

A typical .NET Core project includes:

Program.cs: The entry point of the application

Startup.cs: Configures services and middleware

Controllers/: Contains logic for handling HTTP requests

You can also integrate Entity Framework Core for database access and use Swagger for API documentation.

6. Cross-Platform Deployment

.NET Core supports deployment on Linux servers, Docker containers, or cloud services like Azure and AWS. This flexibility makes it ideal for modern DevOps pipelines.

Conclusion

Getting started with .NET Core is easy and opens the door to building fast, scalable, and cross-platform applications. As you explore further, you'll find a rich ecosystem and strong community support ready to help you grow as a developer.

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