Dev Log: deleting code and breaking the build on purpose
Day one of building Munchausen v1.0 started with deleting the existing implementation and deliberately breaking its replacement. Munchausen is a mock-…
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Munchausen: The forgotten side project from 9 years ago
9 years ago ... I started this project 9 years ago, back in 2017. Mainly because I wanted to learn a few things. Plenty of tools already existed at th…
This week in Cursor + .NET — 7 rules (week ending June 14, 2026)
Every weekday a single, opinionated rule for senior C#/.NET engineers using Cursor. Here's the full week in one read — canonical posts live on the Age…
How to Use FFmpeg with C# (No Installation Required)
Originally published at ffmpeg-micro.com Most C# video processing guides start the same way: download an FFmpeg binary, add it to your PATH, then call…
Starving the Garbage Collector: A Pragmatic Guide to Zero-Allocation C#
Over the last few weeks, I’ve open-sourced a suite of high-performance, zero-dependency C# engines. This includes a native DataFrame library ( Glacier…
A Semantic Approach to WPF and MVVM with Clprolf framework
Introduction WPF and the MVVM (Model-View-ViewModel) pattern are powerful tools for desktop development. However, as applications grow, the technical …
Azure Application Insights: Monitoring, KQL Queries and Observability in Production
At 2am on a Tuesday, an IP address change in Microsoft infrastructure silently broke our entire integration pipeline at Blue Yonder. Messages stopped …
I Built a Spaced Repetition Flashcard App and Deployed It to Azure for $5/month
A couple of years ago, I built a custom flashcard app. I had a huge list of words and sentences in Japanese that I collected in an Excel file. I wante…
C# 14: The `field` Keyword — Cleaner Properties, Zero Boilerplate
C# 14: The field Keyword — Cleaner Properties, Zero Boilerplate Every C# developer has been there. You start with a clean auto-property, then requirem…
The joy of coding a command line english dictionary program in dotnet
In today's globally connected digital village, we often come across words and syllables which are quite new to us. Most folks hardly take the trouble …
C# Compiler Lowering Explained: What Happens at Build Time - Part 1 of the "The Anatomy of Compiler Lowering" series
C# Compiler Lowering Explained: What Happens at Build Time (Part 1) itplamen itplamen itplamen Follow Jun 5 C# Compiler Lowering Explained: What Happe…
The AI-generated C# that passes review and breaks in production
TL;DR — AI assistants are producing C# that looks correct and passes review, but reintroduces production regressions we spent years training out of te…
I built a native C# Grep engine that's holding it's own with ripgrep (with zero allocations)
Let’s be honest: the golden rule of modern software engineering is "never rewrite grep." Tools like ripgrep are written in native Rust, compiled strai…
I built an audit log for EF Core that can actually undo a change
If you've shipped a few business apps you've probably written the same thing more than once: an audit log. A table that answers "who touched this row,…
Why Squirix uses a strict client/server architecture for a .NET distributed cache
Squirix 0.1.0 is an early preview of a .NET distributed cache. A typed client SDK talks to a remote server over gRPC; the server owns state, routing, …
C#14 The field keyword
Introduction The token field enables you to write a property accessor body without declaring an explicit backing field. The token field is replaced wi…
How I Built and Published a .NET NuGet Package for the Giant SMS API
A while back, I needed to integrate SMS into a .NET project. Giant SMS had a REST API, but no official .NET client. The only existing library was a PH…
How I Am Building an AI Meeting Assistant in ASP.NET Core (And Avoided Timeout Nightmares)
For my 4rd-year Software Engineering final project at university, I’m building an AI Meeting Assistant. The core feature is simple: A user uploads a 2…
After 4 months solo: shipping a Windows tray AI hotkey on .NET 8 + WPF (and the Win32 paste-back rabbit hole)
I spent 4 months of nights and weekends building CapyBro — a Windows tray app that runs AI on any selected text via a global hotkey. Native .NET 8 + W…
5 Surprises Migrating .NET Framework to .NET 9 with Claude Opus
5 Surprises Migrating .NET Framework to .NET 9 with Claude Opus My workflow before this little experiment was pretty standard for a .NET Framework to …
Learn ASP.NET from Scratch
If you read my last post , you read all of the things that I'd like to learn this year, starting with ASP.NET Core. I've spent the past week gathering…
Why CancellationToken Matters More in .NET AI Systems
CancellationToken is one of the most underrated AI engineering features in .NET. Not because it is new. Because AI workloads have a different runtime …
How to Import Excel Data in ASP.NET Core (Upload, Parse and Read Worksheets)
Importing data from Excel is a common requirement in ASP.NET Core applications. Whether you're building an HR system, inventory platform, CRM, or fina…
pypdf vs PdfPig: Text Extraction at Scale
Overview PDF text extraction is a common pre-processing step in data pipelines — ingesting research papers, legal documents, or reports before embeddi…
Introduction to LiquidPages
If you've ever enjoyed the developer experience of Razor Pages in ASP.NET but wished you could use the safer, designer-friendly Liquid templating lang…
Building software in C#: part 2 - code architecture
In my previous post, I described how historical trends shaped our (or at least my) perception of software architecture. However, with experience and s…
Building software in C#: part 1 - history.
3-Layer Architecture When I started programming in C# back in 2010 in Prague (Czech Republic), the dominant trend was the 3-layer monolithic architect…
An Official Claude SDK for .NET? Yes, Really.
If you've been building with Claude in .NET, you've probably leaned on one of the lovely community SDKs Anthropic.SDK by tghamm, or tryAGI.Anthropic b…
Run OpenAI Codex CLI on Claude, Gemini, or Llama — in 50 lines of C#
OpenAI's Codex CLI ships with a great editor-agent UX: shell tool, apply_patch , plan tracking, the lot. The catch — as of February 2026 it only speak…
How to use the Specification Pattern to Clean Up Query Logic in C#, .NET
The Problem I was building a content management platform with a .NET 9 backend. The platform manages videos, articles, lyrics, and a bunch of lookup t…