ASP.NET Core Dependency Injection: Singleton, Scoped & Transient

Master Dependency Injection in ASP.NET Core! In this tutorial, we break down Singleton, Scoped, and Transient lifetimes, explaining how they work and when to use each in your .NET 9 applications. You'll see hands-on coding examples, understand why Dependency Injection (DI) is crucial for scalability, maintainability, and unit testing, and learn how to implement DI properly using interfaces. Whether you're a C# developer or building ASP.NET Core APIs, this guide will help you write cleaner, more modular code.

📚 Learn More:
➤ .NET 9 - Implementing Repository Pattern with Minimal API & SQLite | Entity Framework Core Tutorial: https://youtu.be/bOJLgzU4M74

➤ Build CRUD API with Dapper in .NET 9 | ASP.NET Core Web API Tutorial with SQL Server :https://youtu.be/_oFCFSiXsZw

➤ Implement Options Pattern Validation with Data Annotations in .NET 9 | ASP.NET Core Tutorial: https://youtu.be/8pukJ4pDGyI

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Chapters:
0:00 Intro
0:15 What is Dependency?
1:45 What is Dependency Injection?
2:22 Project Setup
4:00 Add Controller
6:26 Implement Singleton lifetime
11:00 Implement Scoped lifetime
12:15 Implement Transient lifetime

#aspnetcore #dotnetcore #dependencyinjection #dotnet #csharptutorial #aspdotnetcore #csharp