ASP.NET Core Dependency Injection: Singleton, Scoped & Transient
Learn how Singleton, Scoped, and Transient services work in ASP.NET Core DI with clear explanations and usage scenarios. 🔧

Poorna Soysa
12.8K views • Feb 8, 2025

About this video
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
Connect with me 👋:
► GITHUB: https://www.github.com/poorna-soysa
► LINKEDIN: https://www.linkedin.com/in/poorna-soysa/
► TWITTER: https://twitter.com/TechPoorna/
👉 Support my work:
https://www.buymeacoffee.com/poorna.soysa
Don't Forget to:
👍 Like this video if you found it helpful
🔔 Subscribe for more coding tutorials
💬 Comment if you have any questions or suggestions
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
📚 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
Connect with me 👋:
► GITHUB: https://www.github.com/poorna-soysa
► LINKEDIN: https://www.linkedin.com/in/poorna-soysa/
► TWITTER: https://twitter.com/TechPoorna/
👉 Support my work:
https://www.buymeacoffee.com/poorna.soysa
Don't Forget to:
👍 Like this video if you found it helpful
🔔 Subscribe for more coding tutorials
💬 Comment if you have any questions or suggestions
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
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Video Information
Views
12.8K
Likes
562
Duration
13:37
Published
Feb 8, 2025
User Reviews
4.6
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