C# Advent

The website is back into "archive mode". Thank you to everyone who participated. See you in the fall!

We managed *48* posts this year (out of 50), for a 96% successful posting rate!

@trailheadtech.bsky.social definitely led us in “most community posts per company” (is that a metric?…yeah it is now)

Thanks for a fantastic 2025 C# Advent!

See you next year!

#csadvent #csharp #dotnet

#CSAdvent post 2 for December 25, 2025!

"String Interning" by @flash0ver.bsky.social

github.com/Flash0ver/do...

#dotnet #csharp

Creating Your Own MSBuild SDK - It's Easier Than You Think! An MSBuild SDK is basically a NuGet package that automatically imports .props and .targets files into your project. That's it. That's the whole thing.

#CSAdvent post 1 for December 25, 2025!

"Creating Your Own MSBuild SDK - It's Easier Than You Think!" by @codingwithcalvin.net

codingwithcalvin.net/creating-you...

#dotnet #csharp

Mastering Deployment: An Easy Guide About Modern Docker Workflow for Depoying .NET 10 application Master .NET 10 deployment with Docker! This guide simplifies containerization, ensuring consistent performance across all environments. Learn to build production-ready images.

#CSAdvent post 2 for December 24, 2025!

"Mastering Deployment: An Easy Guide About Modern Docker Workflow for Depoying .NET 10 application" by Santhosh Reddy Vootukuri (www.linkedin.com/in/naga-sant...)

www.c-sharpcorner.com/article/mast...

#dotnet #csharp

Evolving Intelligence: Evolutionary Algorithms and Neural Networks in C# - Trailhead Technology Partners Simulate an evolution of creatures that evolve to survive in a world where only the corners of the map promote reproduction.

#CSAdvent post 1 for December 24, 2025!

"Evolving Intelligence: Evolutionary Algorithms and Neural Networks in C#" by Piotr Kolodziej (www.linkedin.com/in/piotr-kol...)

trailheadtechnology.com/evolving-int...

#dotnet #csharp

Santa's AI Chat App - Building a Festive Chat Application with RAG and .NET Templates In this blog post, we explore how to build a Santa Chat application using AI and Retrieval-Augmented Generation (RAG) with the latest Microsoft.Extensions.AI project templates. Discover how to leverag...

#CSAdvent post 2 for December 23, 2025!

"Santa's AI Chat App" by @kylemcmaster.com

blog.nimblepros.com/blogs/santas...

#dotnet #csharp

The .NET Cross-Platform Showdown: MAUI vs Uno vs Avalonia (And Why Avalonia Won) I've been writing .NET code since the first beta. Over three decades of professional development,...

#CSAdvent post 1 for December 23, 2025!

"The .NET Cross-Platform Showdown: MAUI/WinUI vs Uno vs Avalonia (And Why Avalonia Won)" by @biozal.bsky.social

dev.to/biozal/the-n...

#dotnet #csharp

Api Versioning - A deep dive

#CSAdvent post 2 for December 22, 2025!

"Api Versioning - A deep dive" by @irina.codes

irina.codes/api-versioni...

#dotnet #csharp

#CSAdvent post 2 for December 21, 2025!

"Over the River and Through the Woods" by @timpurdum.dev

timpurdum.dev/post/2025/12...

#dotnet #csharp

#CSAdvent post 1 for December 21, 2025!

"Functional Programming with C# -The Mondas Were Here the Whole Time!" by Simon Painter (www.linkedin.com/in/simon-pai...)

www.thecodepainter.co.uk/blog/2025122...

#dotnet #csharp

Bringing the DOOM to Uno Platform Let's answer the most pressing question in software development: Can Uno Platform run DOOM?

#CSAdvent post 2 for December 20, 2025!

"Bringing the DOOM to Uno Platform" by Martin Zikmund (www.linkedin.com/in/mzikmund/)

mzikmund.dev/blog/bringin...

#dotnet #csharp @platform.uno

Getting Started with Couchbase Enterprise Analytics SDK Introduction Couchbase Enterprise Analytics is a new server from Couchbase that specializes in complex queries on data from multiple sources. It’s not an operational database, but a highly scalable…

#CSAdvent post 1 for December 20, 2025!

"Getting Started with Couchbase Enterprise Analytics SDK" by Jeff Morris (www.linkedin.com/in/jeffscott...)

jeffrymorris.net/2025/12/20/g...

#dotnet #csharp

#CSAdvent post 2 for December 19, 2025!

"Agent orchestration with Microsoft Agent Framework" by @thesoccerdev.bsky.social

www.thesoccerdev.com/agent-orches...

#dotnet #csharp

Building an AI-Powered Form Assistant with Blazor Create an AI assistant that guides users through completing RMA forms using natural language, JSON schema validation and real-time form binding in Blazor.

#CSAdvent post 1 for December 19, 2025!

"Building an AI-Powered Form Assistant with Blazor" by @edcharbeneau.bsky.social

www.telerik.com/blogs/buildi...

#dotnet #csharp

[C# Tip] How to create and access custom C# Attributes by using Reflection In C#, Attributes are a handy mechanism to attach metadata to your classes, methods, properties, etc. In this article, we will see how to create custom Attributes and access them at runtime using Refl...

#CSAdvent post 2 for December 18, 2025!

"How to create and access custom C# Attributes by using Reflection" by @bellonedavide.bsky.social

www.code4it.dev/csharptips/c...

#dotnet #csharp

From Spec to Santa: My C#‑Powered Christmas Story Generator Experiment In this article, I will explain how I built a website to generate Christmas Stories my almost 5-year-old daughter using C# and AI related technologies (GitHub Spec Kit, GitHub Copilot, Microsoft.Exten...

#CSAdvent post 1 for December 18, 2025!

"From Spec to Santa: My C#‑Powered Christmas Story Generator Experiment" by @techwatching.bsky.social

techwatching.dev/posts/christ...

#dotnet #csharp

From Spec to Santa: My C#‑Powered Christmas Story Generator Experiment In this article, I will explain how I built a website to generate Christmas Stories my almost 5-year-old daughter using C# and AI related technologies (GitHub Spec Kit, GitHub Copilot, Microsoft.Exten...

And here is my C# Advent post 👉 techwatching.dev/posts/christ...
Or how I created a Christmas story generator using GitHub Spec Kit.
@csadvent.christmas #aspire #dotnet #github

Building a Fibonacci Sphere Visualizer with AI in the Loop Pixel-Perfect Multi-Platform Applications with C# and WinUI for Windows, WebAssembly, iOS, macOS, Android and Linux

#CSAdvent post 2 for December 17, 2025!

"Building a Fibonacci Sphere Visualizer with AI in the Loop" by Matthew Mattei (www.linkedin.com/in/matteimatt/)

platform.uno/blog/buildin...

#dotnet #csharp #UnoPlatform @platform.uno

Your cache is not protected from cache stampede Learn how ConcurrentDictionary and MemoryCache can cause multiple identical requests under load, and discover how HybridCache solves this problem.

#CSAdvent post 1 for December 17, 2025!

"Your cache is not protected from cache stampede" by Alexey Fedorov (www.linkedin.com/in/alexeyfv/)

www.alexeyfv.xyz/en/post/2025...

#dotnet #csharp

EF Core 10 Turns PostgreSQL into a Hybrid Relational-Document DB - Trailhead Technology Partners Discover how EF Core 10 and PostgreSQL JSONB make it easy to model flexible, schema-evolving data in a hybrid relational–document db.

#CSAdvent post 2 for December 16, 2025!

"EF Core 10 Turns PostgreSQL into a Hybrid Relational-Document DB" by Stefan Mitic (trailheadtechnology.com/author/stefa...)

trailheadtechnology.com/ef-core-10-t...

#dotnet #csharp

Manufacturing Certainty: Load Testing with Azure Load Testing - Trailhead Technology Partners Load testing using Azure Load Test prevents significant production issues and bolsters the confidence of technology-driven businesses.

#CSAdvent post 1 for December 16, 2025!

"Manufacturing Certainty: Load Testing with Azure Load Testing" by Andy Wilson (www.linkedin.com/in/andy-wils...)

trailheadtechnology.com/manufacturin...

#dotnet #csharp

#CSAdvent post 2 for December 15, 2025!

"TUnit: The New Sheriff in Town for .NET Testing" by Vladan Petrovic (www.linkedin.com/in/vladan-pe...)

trailheadtechnology.com/tunit-the-ne...

#dotnet #csharp

Sentiment Analysis in C#: Azure AI Language or LLMs - Trailhead Technology Partners Explore the shift from traditional sentiment analysis to LLMs in C#, using Azure AI and OpenAI for improved accuracy and nuanced insights.

#CSAdvent post 1 for December 15, 2025!

"Sentiment Analysis in C#: Azure AI Language or LLMs" by @rodrigojuarez.com

trailheadtechnology.com/sentiment-an...

#dotnet #csharp

#CSAdvent post 2 for December 14, 2025!

"Dynamically Changing Decimal & Thousand Separators At Runtime" by Conrad Akunga (www.linkedin.com/in/conrad-ak...)

www.conradakunga.com/blog/dynamic...

#dotnet #csharp

16 Tips for Writing AI-Ready C# Code 16 practical tips for optimizing your C# codebase to work seamlessly with AI coding assistants like Copilot, Cursor, and Claude Code, covering foundational practices, structural patterns, and C# langu...

#CSAdvent post 1 for December 14, 2025!

"16 Tips for Writing AI-Ready C# Code" by Matt Eland (www.linkedin.com/in/matteland/)

accessibleai.dev/post/writing...

#dotnet #csharp

#CSAdvent post 2 for December 13, 2025!

"C# Advent 2025 - Extension Members by @barretblake.dev

barretblake.dev/posts/develo...

#dotnet #csharp

Sending Holiday Cheer in .NET with Scriban and MailKit - Trailhead Technology Partners See how you can use the Scriban scripting language and engine to template emails and send them with MailKit in .NET.

#CSAdvent post 1 for December 13, 2025!

"Sending Holiday Cheer in .NET with Scriban and MailKit" by John Waters (www.linkedin.com/in/john-wate...)

trailheadtechnology.com/sending-holi...

#dotnet #csharp

Modern .NET with Uno Platform & AI A look at modern .NET development with Uno Platform & AI

#CSAdvent post 1 for December 12, 2025!

"Modern .NET with Uno Platform & AI" by @samidip.bsky.social

platform.uno/blog/modern-...

#dotnet #csharp