![Weekly Recap: Microsoft Agent Framework, Semantic Kernel, and Builder Patterns in C# [Feb 2026]](https://devleader-d2f9ggbjfpdqcka7.z01.azurefd.net/media/SquareBanner.webp)
This week covers the Microsoft Agent Framework in C# -- from core AIAgent abstractions to AgentSessions and function tools -- plus Semantic Kernel agents and plugins, Builder pattern deep dives, and GitHub Copilot SDK development. Also included: new videos on software engineering planning and hiring insights.
Learn how to control assembly scanning in Needlr, including filtering assemblies, controlling which types get discovered, and organizing type registration in .NET applications.
Learn how to use hosted services and background workers with Needlr, including automatic discovery of IHostedService and BackgroundService implementations.
Learn how to use keyed services in Needlr to register and resolve multiple implementations of the same interface using .NET 8's keyed service support.
Learn how to implement the decorator pattern in C# using Needlr's automatic decorator discovery, including the DecoratorFor attribute and manual decorator wiring.
Learn how to build modular .NET applications using Needlr's plugin system, including IServiceCollectionPlugin, IWebApplicationPlugin, and automatic plugin discovery.
Learn how to set up ASP.NET Core web applications with Needlr for dependency injection, including ForWebApplication, minimal APIs, and middleware configuration.
Deep dive into Needlr's Syringe class and its fluent API for configuring dependency injection, discovery strategies, and type registration in C#.
Learn how Needlr's automatic service discovery works in C# with convention-based registration, type scanning, and the DoNotAutoRegister attribute for .NET applications.
Compare Needlr's source generation and reflection strategies for dependency injection in C# to choose the right approach for AOT, performance, and flexibility.
Learn how to install and configure Needlr for dependency injection in .NET with step-by-step setup, NuGet packages, and your first fluent DI application.
Learn how Needlr simplifies dependency injection in C# with automatic service discovery, source generation, and a fluent API for .NET applications.
How can you use an IServiceCollection in console applications to get dependency injection? Is this a viable option if you don't want to use Autofac?
Learn how to use Autofac ComponentRegistryBuilder in ASP.NET Core! We'll see how we can move closer to getting the C# plugin architecture support we want!
Learn how to use Autofac ContainerBuilder in ASP.NET Core to wire up dependency injection. I'll explore what we can and cannot do with this approach!
Learn how to use AutofacServiceProviderFactory in ASP.NET Core for dependency injection! This article explains how to set it up along with the pros and cons.
Running into issues with your Blazor render mode? In my case, I didn't even know it was breaking my dependency injection AND my event handlers. My error though!
Learn how to use Autofac in ASP NET Core applications with only a couple of lines of code! Avoid this common problem when setting up dependency injection.
Learn how to use Scrutor in C# for dependency injection with these 3 simple tips. Try out Scrutor in your next C# application and simplify your registrations!
Learn how to use Autofac in C# for dependency injection! Check out these three code examples to help you get started with dependency injection in C#.
Scrutor vs Autofac in C#! Which one comes out on top between these two solutions for dependency injection in dotnet? See how each are used with code examples!
Step-by-step guide to using IServiceCollection in C# for dependency injection. Learn AddSingleton, AddScoped, and AddTransient with real code examples.
What is Inversion of Control? Learn about Inversion of Control (IOC) and Dependency Injection and how it can be applied in real-world scenarios.
You've started using Autofac for dependency injection in C#, but now you're wondering how to organize Autofac modules most effectively. Dive in for 5 easy tips!
If you're familiar with Autofac and module registration but want to make things easier, automatic module discovery might be for you! Let's see how it works!
Want more flexible, extensible, and testable code? We'll use Autofac net core! What is Autofac? It's a powerful Dependency Injection framework in dotnet!
Organizing code into Autofac modules can make maintaining code much easier and improve extensibility! It all starts with the Autofac module class. Check it out!
Looking to get started using dependency injection with Autofac in your projects? Here's a quick primer on what it is and how to get going for your next project.
An example in C# about how to create a singleton with support for dependency injection or inversion of control (IOC).
