David Au Yeung

I am passionate on .NET, Azure and AI!

Hong Kong Joined on Nov 5, 2024 https://dev.to/auyeungdavid_2847435260

Education

The Chinese University of Hong Kong

Pronouns

He/Him

Work

10+ years of IT experience across public, finance, e-commerce, medical and telecom sectors

* Certified Azure Solutions Architect Expert
* Certified PRINCE2® Practitioner

45 posts published

86 comments written

21 tags followed

Pinned

David Au Yeung

Oct 13

Know the History of AI: Build Your Own Rule-Based Expert System in C#

#history #ai #rulebasedsystem #expertsystem

5 min read

David Au Yeung

Sep 30

Build Your Own GPT from Scratch with C# and TorchSharp (CPU-Only!)

#gpt #ai #torchsharp #csharp

16 min read

David Au Yeung

Aug 7

Building an Intelligent Task Router for Multi-Model AI Systems with ML.NET

#modelrouter #ai #mlnet #csharp

5 min read

David Au Yeung

Jun 15

Just minutes! Build an MCP Server and Client interacting with Ollama in C#

#mcp #ollama #semantickernel #dotnet

4 min read

David Au Yeung

Nov 20 '24

5 Essential SQL Skills Learned from a Decade of Experience

#sqlserver #sql #beginners

4 min read

Cover image for Build Your Own Workflow Engine in C#: Designing Flexible E-Shop Systems

David Au Yeung

Oct 25

Build Your Own Workflow Engine in C#: Designing Flexible E-Shop Systems

#designpatterns #workflowengine #csharp #programming

8 min read

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Cover image for Learning Chinese Philosophy the Tech Way: A Practical Approach to the I Ching (易經) - Concepts, Culture, and a C# Console App

David Au Yeung

Oct 19

Learning Chinese Philosophy the Tech Way: A Practical Approach to the I Ching (易經) - Concepts, Culture, and a C# Console App

#chinese #philosophy #iching #csharp

18 min read

Cover image for Google Removed num=100: How SEO Professionals and Developers Can Adapt While Keeping the DEV Community Thriving

David Au Yeung

Oct 7

Google Removed num=100: How SEO Professionals and Developers Can Adapt While Keeping the DEV Community Thriving

#discuss #google #seo #num100

5 min read

Cover image for Master the Art of Penetration Testing: A Hands-On Guide for Developers

David Au Yeung

Sep 22

Master the Art of Penetration Testing: A Hands-On Guide for Developers

#penetrationtesting #cybersecurity #dotnet #websecurity

6 min read

Cover image for Get Your Google’s Gemini Certified Educator Certificate at Home!

David Au Yeung

Sep 16

Get Your Google’s Gemini Certified Educator Certificate at Home!

#gemini #google #educator #certificate

3 min read

Cover image for Solving the Time Zone Issue in App Development with IAppClock

David Au Yeung

Sep 11

Solving the Time Zone Issue in App Development with IAppClock

#timezone #datetime #dotnet #csharp

3 min read

Cover image for Convert PDFs to JPEGs in C#: A Simple Helper for LLM Integration

David Au Yeung

Sep 3

Convert PDFs to JPEGs in C#: A Simple Helper for LLM Integration

#pdf #image #spirepdf #dotnet

2 min read

Cover image for My 2025 Milestone #2: Achieved Microsoft Certified Azure Solutions Architect Expert!

David Au Yeung

Aug 29

My 2025 Milestone #2: Achieved Microsoft Certified Azure Solutions Architect Expert!

#azure #cloud #exam #az305

3 min read

Cover image for Implement AES-256 Encryption and Decryption in C#: A Beginner-Friendly Guide

David Au Yeung

Aug 21

Implement AES-256 Encryption and Decryption in C#: A Beginner-Friendly Guide

#aes #cryptography #encryption #dotnet

3 min read

Cover image for Generate QR Codes for Free in C#: A Step-by-Step Guide

David Au Yeung

Aug 16

Generate QR Codes for Free in C#: A Step-by-Step Guide

#qrcode #generator #qrcoder #dotnet

2 min read

Cover image for Turn LLM-Generated HTML into Images Using PuppeteerSharp with .NET

David Au Yeung

Aug 10

Turn LLM-Generated HTML into Images Using PuppeteerSharp with .NET

#llm #htmltoimage #puppeteersharp #csharp

6 min read

Cover image for Lightning-Fast Address Matching …Now with a Smart Hybrid (Deterministic + LLM) Engine: A Fun Experiment

David Au Yeung

Aug 2

Lightning-Fast Address Matching …Now with a Smart Hybrid (Deterministic + LLM) Engine: A Fun Experiment

#deterministic #llm #datacleaning #dotnet

10 min read

Cover image for Mastering Dynamic SQL Operations with the Strategy Pattern: Generate and Execute Commands Across Databases in C#

David Au Yeung

Jul 30

Mastering Dynamic SQL Operations with the Strategy Pattern: Generate and Execute Commands Across Databases in C#

#mysql #postgressql #sqlserver #csharp

4 min read

Cover image for Unlock the Power of LLM-Driven ETL: Transform Variable CSV to Clean JSON with C#, Semantic Kernel & Llama 3.2-3B

David Au Yeung

Jul 28

Unlock the Power of LLM-Driven ETL: Transform Variable CSV to Clean JSON with C#, Semantic Kernel & Llama 3.2-3B

#llm #etl #semantickernel #csharp

7 min read

Cover image for Building a Text-to-SQL AI Assistant with lightweight LLM, and Semantic Kernel in C#: A Fun Experiment

David Au Yeung

Jul 18

Building a Text-to-SQL AI Assistant with lightweight LLM, and Semantic Kernel in C#: A Fun Experiment

#texttosql #llm #semantickernel #dotnet

7 min read

Cover image for Enhancing UI/UX in LLM Responses with Markdown Formatting Using Markdig and Bootstrap in C#

David Au Yeung

Jul 15

Enhancing UI/UX in LLM Responses with Markdown Formatting Using Markdig and Bootstrap in C#

#llm #markdown #markdig #csharp

7 min read

Cover image for Automate MongoDB Database Backups with C# Console Application and Windows Task Scheduler

David Au Yeung

Jun 23

Automate MongoDB Database Backups with C# Console Application and Windows Task Scheduler

#mongodb #backup #taskscheduler #csharp

6 min read

Cover image for Build an Audio-to-Text Conversion Tool Using Azure AI Speech SDK with Audio Transformation in C#

David Au Yeung

Jun 19

Build an Audio-to-Text Conversion Tool Using Azure AI Speech SDK with Audio Transformation in C#

#azure #ai #speech #dotnet

5 min read

Cover image for Build an HTML to DOCX Conversion Tool Using OpenXML with LLM Generated Content in C#

David Au Yeung

Jun 14

Build an HTML to DOCX Conversion Tool Using OpenXML with LLM Generated Content in C#

#openxml #llm #documentation #dotnet

4 min read

Cover image for My 2025 Milestone #1: Proudly Certified as an Azure Administrator!

David Au Yeung

Jan 15

My 2025 Milestone #1: Proudly Certified as an Azure Administrator!

#azure #exam #az104 #certification

1 min read

Cover image for Microsoft Certified Azure Administrator Associate Exam (AZ-104) Lab Preparation #6.2: Azure Files - File Sync

David Au Yeung

Jan 8

Microsoft Certified Azure Administrator Associate Exam (AZ-104) Lab Preparation #6.2: Azure Files - File Sync

#azure #exam #az104 #filesync

3 min read

Cover image for Microsoft Certified Azure Administrator Associate Exam (AZ-104) Lab Preparation #6.1: Azure Files - File Share

David Au Yeung

Jan 8

Microsoft Certified Azure Administrator Associate Exam (AZ-104) Lab Preparation #6.1: Azure Files - File Share

#azure #exam #az104 #fileshare

2 min read

Cover image for Microsoft Certified Azure Administrator Associate Exam (AZ-104) Lab Preparation #5: Azure Disk Encryption

David Au Yeung

Jan 7

Microsoft Certified Azure Administrator Associate Exam (AZ-104) Lab Preparation #5: Azure Disk Encryption

#azure #exam #az104 #encryption

3 min read

Cover image for Microsoft Certified Azure Administrator Associate Exam (AZ-104) Lab Preparation #4.3: Storage Account and Service Endpoints

David Au Yeung

Jan 6

Microsoft Certified Azure Administrator Associate Exam (AZ-104) Lab Preparation #4.3: Storage Account and Service Endpoints

#azure #exam #az104 #serviceendpoints

2 min read

Cover image for Microsoft Certified Azure Administrator Associate Exam (AZ-104) Lab Preparation #4.2: Storage Account and Access Token

David Au Yeung

Jan 6

Microsoft Certified Azure Administrator Associate Exam (AZ-104) Lab Preparation #4.2: Storage Account and Access Token

#azure #exam #az104 #sastoken

2 min read

Cover image for Microsoft Certified Azure Administrator Associate Exam (AZ-104) Lab Preparation #4.1: Storage Account and Blob Storage

David Au Yeung

Jan 6

Microsoft Certified Azure Administrator Associate Exam (AZ-104) Lab Preparation #4.1: Storage Account and Blob Storage

#azure #exam #az104 #blob

3 min read

Cover image for Microsoft Certified Azure Administrator Associate Exam (AZ-104) Lab Preparation #3: Monitor Alerts

David Au Yeung

Jan 3

Microsoft Certified Azure Administrator Associate Exam (AZ-104) Lab Preparation #3: Monitor Alerts

#azure #exam #az104 #alerts

2 min read

Cover image for Microsoft Certified Azure Administrator Associate Exam (AZ-104) Lab Preparation #2: Azure Policy

David Au Yeung

Jan 2

Microsoft Certified Azure Administrator Associate Exam (AZ-104) Lab Preparation #2: Azure Policy

#azure #exam #az104 #policy

3 min read

Cover image for Microsoft Certified Azure Administrator Associate Exam (AZ-104) Lab Preparation #1: Azure Bastion

David Au Yeung

Jan 1

Microsoft Certified Azure Administrator Associate Exam (AZ-104) Lab Preparation #1: Azure Bastion

#azure #exam #az104 #bastion

2 min read

Cover image for Step-by-Step Guide (Part 2): Adding Series Characters to AI Storyteller with RAG and Kernel Memory

David Au Yeung

Dec 30 '24

Step-by-Step Guide (Part 2): Adding Series Characters to AI Storyteller with RAG and Kernel Memory

#ai #rag #kernelmemory #dotnet

7 min read

Cover image for Step-by-Step Guide: Write Your First AI Storyteller with Ollama (llama3.2) and Semantic Kernel in C#

David Au Yeung

Dec 26 '24

Step-by-Step Guide: Write Your First AI Storyteller with Ollama (llama3.2) and Semantic Kernel in C#

#ai #ollama #semantickernel #csharp

5 min read

Cover image for My Journey to Becoming a Microsoft Azure Solutions Architect Expert

David Au Yeung

Dec 9 '24

My Journey to Becoming a Microsoft Azure Solutions Architect Expert

#devto #azure #certification #career

1 min read

Cover image for 5 Key Concepts Every .NET Developer Should Know for Job Interviews

David Au Yeung

Dec 7 '24

5 Key Concepts Every .NET Developer Should Know for Job Interviews

#dotnet #csharp #webdev #tutorial

5 min read

Cover image for How to Manage Your SQL Server Database Effectively

David Au Yeung

Dec 6 '24

How to Manage Your SQL Server Database Effectively

#database #sqlserver #sql #sqlserverdatabaseproject

3 min read

Cover image for The Power of OUTER APPLY: A SQL Weapon to Expand Legacy Database

David Au Yeung

Nov 28 '24

The Power of OUTER APPLY: A SQL Weapon to Expand Legacy Database

#sql #sqlserver #legacy #database

6 min read

Cover image for Step-by-Step Guide: Easy Reporting 📋 with ClosedXML (Excel) and Database Views

David Au Yeung

Nov 26 '24

Step-by-Step Guide: Easy Reporting 📋 with ClosedXML (Excel) and Database Views

#dotnet #closedxml #excel #sqlserver

5 min read

Cover image for Step-by-Step Guide: Write Your First Web Crawling App with Selenium in C#

David Au Yeung

Nov 19 '24

Step-by-Step Guide: Write Your First Web Crawling App with Selenium in C#

#rpa #webcrawling #selenium #dotnet

4 min read

Cover image for Unlocking Data Potential: My Journey with .NET ETLBox

David Au Yeung

Nov 14 '24

Unlocking Data Potential: My Journey with .NET ETLBox

#dotnet #csharp #etl

2 min read

Cover image for Step-by-Step Guide: Querying From Databases Via a Single Database Helper Using the Strategy Design Pattern

David Au Yeung

Nov 8 '24

Step-by-Step Guide: Querying From Databases Via a Single Database Helper Using the Strategy Design Pattern

#mysql #postgres #sqlserver #csharp

3 min read

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