Uploaded April 2026 | Updated September 2026, 1 week ago

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Building a fully custom Avalonia UI theme from scratch — no AI shortcuts, just real hand-coded development. This is the first video in a complete series on creating professional Avalonia UI themes by hand.

In this video we set up the entire development environment ready to build a custom Avalonia theme from the ground up. Whether you're coming from WPF, WinUI 3, or starting fresh with Avalonia UI, this is where it all begins.

What we cover:
- Setting up the project environment for Avalonia UI theming
- Understanding the structure needed for custom theme development
- What we'll be building across the full series

No AI-generated code. No shortcuts. Just real senior-level engineering, given away for free.

📌 Chapters:0:00 - Introduction
0:53 - Project Structure Overview
1:36 - Creating the Demo App
2:33 - Creating the Theme Project
3:51 - Linking the Theme to the Demo App
4:13 - Getting the Fluent Theme Source
6:11 - Fixing the Version Mismatch
7:01 - Renaming Fluent to Prototype
9:13 - Troubleshooting Build Errors
12:44 - Final Project Rename
13:24 - Theme Compiles — What's Next

🔗 Website: angelsix.com