DocumentIO — Building a Unified API for 7 Document Formats in C#
DocumentIO — Building a Unified API for 7 Document Formats in C This is part of my series on building the VNML Agent Framework — a 100% local agenti…
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How to Structure Production Apps with Vertical Slice Architecture in .NET in 2026
Vertical Slice Architecture (VSA) is one of the most popular ways to structure .NET projects today. It structures an application by features instead…
Securing a .NET API with JWT Authentication Using Clean Architecture
When building a RESTful API, securing your endpoints is just as important as the business logic itself. While implementing JWT (JSON Web Tokens) in…
Understanding Blazor Component State
Understanding Blazor Component State Blazor components can respond to user interactions by updating component state and rendering the UI again. A va…
NuGet and what's behind your dependencies
🇧🇷 Prefere ler em português? Leia aqui . Over the last three days of my 30 Days of .NET , we saw what happens when we run dotnet run , explored the…
wdjk
Building a Browse Membership Plans Page in Blazor with Bootstrap Introduction to Blazor Components Blazor is a web UI framework from Microsoft that…
Aggregates στο Domain-Driven Design: Πώς και γιατί τα χρησιμοποιούμε σε C# και .NET
"Πλήρης οδηγός για Aggregates και Aggregate Roots στο DDD, με πρακτικά παραδείγματα C#, EF Core, Clean Architecture και Business Rules." tags: dotne…
How big is Hello World in C#? From 76 MB down to 0.73 MB
How big is the smallest C# program? It depends almost entirely on how you publish it . Same one line of code, five different dotnet publish commands…
Why LINQ is lazy: IEnumerable and yield in C#, explained by running it
LINQ is lazy: Where and Select don't do anything until you loop over the result. Most people learn that as a rule. But it isn't LINQ magic. It comes…
BOLA in ASP.NET Core: Why Authenticated Users Can Still Read Someone Else's Data
A pentest report came back with a finding rated "high": change the invoiceId in GET /api/invoices/{invoiceId} , and a logged-in user from Tenant A c…
5 C# DateTime bugs that pass every test
Date and time bugs are the worst kind: the code is correct on the day you test it, in the time zone you test it in. Then the clocks change, or a use…
Are exceptions really slow in C#? I threw a million to find out
"Exceptions are slow" gets repeated in every C# code review, usually without a number attached. So I measured it. Five experiments, each run three t…
What async/await really compiles to in C# (and when ValueTask is worth it)
Most of us use async / await every day without knowing what it turns into. That's fine, until you need to answer a question like "should this method…
5 ways Cancel doesn't actually cancel in C#
A user clicks Export , changes their mind, and clicks Cancel . The spinner goes away. On the server, the export keeps running to the end and saves a…
Transient vs Scoped vs Singleton: the DI bug that put Ada's laptop in Bob's cart
Bob opens his shopping cart and finds a laptop he never added. Ada added it, on a different computer, a few minutes earlier. Nothing was hacked. One…
European Law for .NET Developers: What the GDPR Means for Your Code
Hey lovely readers, The GDPR has been around since 2018, and most of us have heard of it. But when I ask developers what it actually means for the c…
Result Pattern στο ASP.NET Core: Πώς να διαχειριζόμαστε επιτυχίες και αποτυχίες χωρίς να βασιζόμαστε στα Exceptions
Εισαγωγή Ένα από τα σημαντικότερα ζητήματα στον σχεδιασμό μιας σύγχρονης εφαρμογής είναι ο τρόπος με τον οποίο διαχειριζόμαστε τις αποτυχίες. Στην κ…
AI/ML Fundamentals
AI/ML Fundamentals A deep-dive walkthrough of the core ideas behind modern AI — covering how AI, machine learning, and deep learning relate, the thr…
Supabase .NET DevLog #13
Welcome to our weekly log for the Supabase .NET SDK 🎉 Sorry for being a little late on this one. Like I said last week, I spent more time working on…
Decorating IChatClient Without Tangling the Application
An IChatClient decorator applies a shared rule to every call through a client. It can reject an oversized request or record a model call. The featur…
Sequential async execution in .NET: SemaphoreSlim, Channels, and TaskFlow
Familiar pattern? using System ; using System.Threading ; using System.Threading.Tasks ; public sealed class InstrumentController : IDisposable { pr…
This week in Cursor + .NET — 7 rules (week ending October 04, 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 A…
I built the same app twice — by hand, then with AI. I trust the fast one less.
I ran a stupid little experiment a few months ago. I built the same app twice. The first time, the slow way — by hand, the way I used to build every…
I Love .NET Blazor. Now It Can Build Agentic UI, Not Just Chat Boxes
Introduction I love Blazor so much. I have used it to build more than 10 projects this year. One thing I enjoy is that I can build interactive web a…
CancellationToken in C#: Stop Wasting Resources on Work Nobody Needs
Imagine a user sends a request to your API, but halfway through, they close the browser. Your server doesn't automatically know that the work is no…
WebMCP: Letting Agents Call Your Web App Instead of Clicking It
An AI agent that wants to book a flight on your site today does it the hard way. It reads the DOM, guesses which element is the date picker, clicks,…
From MVP to Production: Building a Small Business Platform Like a Real Product
An architectural case study of designing, building, and deploying a proprietary business platform without overengineering it. Note: This case study…
One C# renderer for every social image: job cards in Arabic and French with GDI+
We run Wadifa Info , a Moroccan site that lists public-sector recruitment exams and job offers in Arabic and French. Every job page needs a preview…
Building the Harness: A Production-Minded AI Agent Architecture in .NET
This is the implementation companion to the LinkedIn article The Model Isn’t Your Agent. The Harness Is . That article makes the architectural argum…
Querying Qdrant from .NET
This example turns a question into an embedding, applies a payload filter, and asks Qdrant for up to three closest eligible points. It then prints t…