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dotnet-winui SKILL.md skillA

dotnet-winui from postpartum-genushyacinthus29/dotnet-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned

mdr add postpartum-genushyacinthus29/dotnet-skills/dotnet-winui@v1.0.1

Pins v1.0.1 in mdr.lock. Pin the fingerprint instead.

Audit grade: A, 17 of 17 checks passed
Kind: SKILL.md skill
Repository: postpartum-genushyacinthus29/dotnet-skills
Path: skills/dotnet-winui/SKILL.md
Versions recorded: 3
Latest version: v1.0.1, committed Mar 25, 2026
First version recorded: Mar 15, 2026
Size: 4,230 bytes
Repository stars: 13
License: MIT

Build or review WinUI 3 applications with the Windows App SDK, including MVVM patterns, packaging decisions, navigation, theming, windowing, and interop boundaries with other .NET stacks. Use when building modern Windows-native desktop UI.

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# WinUI 3 and Windows App SDK

## Trigger On

- building native modern Windows desktop UI on WinUI 3
- integrating Windows App SDK features into a .NET app
- deciding between WinUI, WPF, WinForms, and MAUI for Windows work
- implementing MVVM patterns in Windows App SDK applications

## Workflow

1. **Confirm WinUI is the right choice** — use when modern Windows-native UI, Fluent Design, and Windows App SDK capabilities are needed. For cross-platform, consider MAUI instead.
2. **Choose packaging model early** — packaged (MSIX) vs unpackaged differ materially for deployment, identity, and API access:
   ```xml
   <!-- Unpackaged: add to .csproj -->
   <WindowsPackageType>None</WindowsPackageType>
   ```
3. **Apply MVVM pattern** with the MVVM Toolkit — keep views dumb, logic in ViewModels:
   ```csharp
   public partial class ProductsViewModel : ObservableObject
   {
       [ObservableProperty]
       private ObservableCollection<Product> _products = [];

       [ObservableProperty]
       [NotifyCanExecuteChangedFor(nameof(DeleteCommand))]
       private Product? _selectedProduct;

       [RelayCommand(CanExecute = nameof(CanDelete))]
       private async Task DeleteAsync()
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint

mdr add postpartum-genushyacinthus29/dotnet-skills/dotnet-winui@sha256:8c6b471d8c152c36

The line at the top of this page pins the label v1.0.1, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

[![mdr](https://markdownregistry.com/badge/art_o2gfxsk4kblv5p7p.svg)](https://markdownregistry.com/a/art_o2gfxsk4kblv5p7p)

4 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 3 versions of this file, between Mar 15, 2026 and Mar 25, 2026, about one every 5 days.

version	committed	commit	size	audit
v1.0.1 latest	2026-03-25	a5c2e5b	4,230 B	A	view · diff
v1.0.0	2026-03-15	bd48dea	17,388 B	A	view · diff
v1.0.0	2026-03-15	117f7ac	1,672 B	A	view

Audit of the latest version

A 17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.

pass: Frontmatter block present
pass: Frontmatter declares a name
pass: Frontmatter declares a description
pass: Size between 200 bytes and 200 KB (4230 bytes)
pass: No zero-width or bidi control characters
pass: No instruction hidden inside an HTML comment
pass: No link to an exfiltration or paste host
pass: No credential-shaped string
pass: No instruction to send local credentials anywhere
pass: No text hidden with inline styles
pass: No prompt-injection phrasing
pass: No curl or wget piped into a shell
pass: No recursive delete of root, home or parent
pass: No instruction to read or print local credentials
pass: No base64 blob over 200 characters
pass: No link to a raw IP address
pass: No script tag

Source

GitHub

postpartum-genushyacinthus29/dotnet-skills · 13 stars · license MIT · pushed 2026-10-13 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_o2gfxsk4kblv5p7p
GET https://markdownregistry.com/api/v1/resolve?ref=postpartum-genushyacinthus29/dotnet-skills/dotnet-winui
GET https://markdownregistry.com/api/v1/blob/8c6b471d8c152c360ae4b5aef13e3f2c96aeb281e0ce4ea72b2ba23e7e8a7201

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.