David Au Yeung articles - 51 total
Step-by-Step Guide: Build a CRUD Blazor App with Entity Framework and PostgreSQL
Introduction Happy New Year 2026 to all! This year, I want to share more basic must-learn...
Run SQLite in the Browser with Blazor WebAssembly (WASM) : A Practical Step‑by‑Step Guide
Introduction In this exercise, we'll learn how to run a real SQLite database entirely in...
Build a Bi‑Directional TOON Parser in C#: Convert TOON JSON with Ease
Introduction Toon (Token-Oriented Object Notation) is a newly promoted format designed...
Will Reasoning Become the New Turing Test? Let's play a Sherlock Holmes game
Introduction I've been thinking about the Turing Test again. The classic experiment where...
💳 Building a Lightweight PayPal Payment Gateway Service in C#
Introduction Processing online payments is one of the core parts of modern web...
Getting Started with Azure Functions: A Beginner's Guide
Introduction Azure Functions is a powerful serverless compute service that allows you to...
Let's Poison Your LLM Application: A Security Wake-Up Call
Introduction AI applications are experiencing unprecedented growth across industries—from...
Build Your Own Workflow Engine in C#: Designing Flexible E-Shop Systems
Introduction When it comes to software design patterns, the Chain of Responsibility...
Learning Chinese Philosophy the Tech Way: A Practical Approach to the I Ching (易經) - Concepts, Culture, and a C# Console App
Introduction Heard of the I Ching/Yijing (易經) but not sure where to start? Think it's just...
Know the History of AI: Build Your Own Rule-Based Expert System in C#
Introduction When we talk about Artificial Intelligence (AI), the conversation often...
Google Removed num=100: How SEO Professionals and Developers Can Adapt While Keeping the DEV Community Thriving
Recently, Google removed the num=100 parameter from its search URLs, causing ripples across the SEO...
Build Your Own GPT from Scratch with C# and TorchSharp (CPU-Only!)
Introduction Ever wondered what it takes to build a GPT model from scratch? Think it's...
Master the Art of Penetration Testing: A Hands-On Guide for Developers
Introduction Before delivering a solution to end users, ensuring its security is critical....
Solving the Time Zone Issue in App Development with IAppClock
Introduction Handling time zones in app development is tricky, but with the right...
Convert PDFs to JPEGs in C#: A Simple Helper for LLM Integration
Introduction In this guide, we'll learn how to convert PDF pages into JPEG images using C#...
My 2025 Milestone #2: Achieved Microsoft Certified Azure Solutions Architect Expert!
I'm thrilled to share another proud milestone in my cloud journey - I just passed the AZ‑305:...
Implement AES-256 Encryption and Decryption in C#: A Beginner-Friendly Guide
Introduction In this guide, we will explore how to implement AES-256 encryption and...
Generate QR Codes for Free in C#: A Step-by-Step Guide
Introduction In this exercise, we will learn how to generate QR codes for free in C# using...
Turn LLM-Generated HTML into Images Using PuppeteerSharp with .NET
Introduction Large-language models (LLMs) love to "draw" with HTML and CSS. That is...
Building an Intelligent Task Router for Multi-Model AI Systems with ML.NET
Introduction In modern AI architectures, we often deploy multiple specialized models, each...
Lightning-Fast Address Matching …Now with a Smart Hybrid (Deterministic + LLM) Engine: A Fun Experiment
Introduction Data cleaning is never sexy. Every CRM export, vendor feed, or merger...
Mastering Dynamic SQL Operations with the Strategy Pattern: Generate and Execute Commands Across Databases in C#
Introduction In this exercise, we build upon the previous implementation by adding the...
Unlock the Power of LLM-Driven ETL: Transform Variable CSV to Clean JSON with C#, Semantic Kernel & Llama 3.2-3B
Introduction We'll feed a messy CSV file to a lightweight llama3.2-3B model and let it...
Building a Text-to-SQL AI Assistant with lightweight LLM, and Semantic Kernel in C#: A Fun Experiment
Introduction Have you ever wondered how to bridge the gap between natural language and...
Enhancing UI/UX in LLM Responses with Markdown Formatting Using Markdig and Bootstrap in C#
Introduction In this article, we'll explore the powerful library Markdig and how it can be...
Automate MongoDB Database Backups with C# Console Application and Windows Task Scheduler
Introduction In this comprehensive guide, we'll build a robust MongoDB backup solution...
Build an Audio-to-Text Conversion Tool Using Azure AI Speech SDK with Audio Transformation in C#
Introduction In this tutorial, we will create a powerful application that converts audio...
Just minutes! Build an MCP Server and Client interacting with Ollama in C#
Introduction In this guide, you'll learn how to build a Model Context Protocol (MCP)...
Build an HTML to DOCX Conversion Tool Using OpenXML with LLM Generated Content in C#
Introduction In this tutorial, we will create a tool that converts HTML content into a...
My 2025 Milestone #1: Proudly Certified as an Azure Administrator!
I can't wait to tell you that I just passed the exam that contained 53 questions that needed to be...