![Weekly Recap: GitHub Copilot SDK, C# Source Generators, and Design Patterns [Mar 2026]](https://devleader-d2f9ggbjfpdqcka7.z01.azurefd.net/media/SquareBanner.webp)
This week covers building AI developer tools with the GitHub Copilot SDK in C# -- from CLI tools and coding agents to ASP.NET Core AI APIs -- plus deep dives into C# source generators with incremental pipelines and Roslyn syntax trees, and practical guides on observer, singleton, decorator, and factory method design patterns.
Build a repository analysis bot with GitHub Copilot SDK in C#. Learn SystemMessageMode.Replace for agent personas, read-only tools, dual console and StringBuilder output, and batch processing.
Build an interactive coding agent with GitHub Copilot SDK in C#. Learn persistent CopilotSession management, file read/write tools, run_dotnet_build feedback, and the REPL agent loop.
Build an AI CLI developer tool with GitHub Copilot SDK in C#. Learn CopilotClient, AIFunctionFactory tools, streaming responses, and session management.
This week covers C# design patterns with deep dives into Singleton and Decorator patterns, plus source generator internals and getting started with the GitHub Copilot SDK in C#. Videos tackle developer career topics including tech debt, overcommunicating, and the ROI of learning C#.
Set up the GitHub Copilot SDK in C# with this step-by-step guide covering NuGet package install, GitHub Copilot CLI authentication, and project configuration.
Master the advanced GitHub Copilot SDK in C# with AIFunctionFactory tools, session hooks, multi-model routing, and multi-agent patterns.
Building real apps with GitHub Copilot SDK in C#: master app architecture patterns, CLI tools, ASP.NET Core APIs, and console agents in .NET.
Deep dive into Needlr's Syringe class and its fluent API for configuring dependency injection, discovery strategies, and type registration in C#.
When junior developers struggle with code reviews, the solution isn't to avoid them—it's to invest in their growth. Learn how to slow down to speed up by building your team's skills.
Just how easy is it to make an API gateway in Zuplo? Zuper eazy. Check out how I'm making an ASCII art API with Zuplo as my API gateway!
See how to use the Extract Method refactoring technique to get started on your journey to being more skilled at refactoring! Check out this C# code example!
Learn how to use Polly in C# to handle faults and retries with ease! Check these 3 code examples showcasing different use cases of Polly in C#!
Leverage NUNit in ASP.NET Core for crafting reliable code with confidence! Learn to create tests, use advanced techniques, and improve your code quality!
Learn about WebApplicationFactory in ASP.NET Core and leveraging it for testing. Use an HttpClient and implement the tips in this article for better tests!
Learn effective strategies and tips for how to understand a new codebase. From reading documentation to pair-programming, you'll learn the necessary tools!
What is string interpolation in C#? Learn about its definition, syntax, and benefits for improving code readability and efficiency. Check out this guide!
Let's explore examples of the Mediator Pattern in C#! See how the Mediator Pattern in C# can promote loose coupling, and increase scalability.
Looking for inspiration for your next project? Look no further! This article provides tips on how to stay creative and generate ideas for programming projects!
Discover the easiest programming languages to learn in this beginner-friendly guide. From Python to JavaScript, let's see what options we have to work with!
Let's learn how to make a budgeting app in C#! We'll dive into ASP.NET Core Blazor, the basics of the app, and even VPS hosting options like RackNerd!
Wondering, "How can I write code on my phone"? Learn how to write code on your phone with DotNetFiddle! Perfect for beginner C# devs without a laptop/desktop!
Learn how to build a personal website in Blazor and ASP.NET Core to show case your skills and experiences. Get started with our ASP.NET Core tutorial today!
See how to use DotNetFiddle, a leading online C# compiler. Develop, test, and share code! We'll answer what is DotNetFiddle in the world of online C# compilers.
If you want to get started with web development in dotnet core, check this out! We'll get you up and running in VS Code for ASP.NET Core web development!
For beginners, it's hard to find projects to work on due to distractions. Writing a program to find the area of a rectangle can teach so many valuable lessons!
Have you ever wanted to change a picture into ASCII art? Now you can with your very own C# program that can generate ASCII art! Sample code included!
In C#, how can we balance asynchrony and laziness? Is there such a thing as async lazy? Let's explore our options built into dotnet!
Implicit operators in C# are a feature that can make our code more readable and expressive. But beware! Misuse can backfire and cause a great deal of headaches!
The facade pattern is useful for hiding complexity by moving dependencies behind an API. Let's dive into the facade design pattern in C# in this article!
Dealing with async EventHandlers in C# can be very problematic. async void is a pattern cause headaches with exceptions. Check out this simple solution!
Starting your career in software development? Here are some frequently asked questions about post secondary education working towards this!
Modern role playing games (RPGs) can have incredibly complex loot systems. This article introduced a video stream on how to structure cross domain information.
xUnit tests not running with .NET standard project settings? Here's a super quick solution to get you back up and running so you can test away!
Check out the second entry in the RPG progress pulse where I discuss the progress on my role-playing game, Macerus! This is a hobby project in Unity3D.
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!
An progress pulse update into the development of Macerus RPG and ProjectXyz game framework leveraging Unity3D. Part 1 of the progress pulse series.
Check out the progress on my Unity3D RPG built using C# and dotnet technologies! This is a labor of love and an ongoing project of mine.
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.
Are you interested in learning about interfaces in C#? This article explains the idea behind a C# interface by showing examples of interfaces in code.
Everyone has their own definition of "ideal" and we all of expectations of others. Try to lead by example and emulate your version of "ideal" to be effective.
Several examples in C# for how you can structure code to meet the singleton design pattern. Check it out before using singletons next!
