Windows Reactor – React like WinUI 3 framework
Microsoft has introduced Microsoft.UI.Reactor, a new declarative, component-based C# framework for building WinUI 3 desktop applications. This framework allows developers to create applications using a familiar React-like approach while maintaining compatibility with existing WinUI controls and XAML. Reactor aims to bridge the gap for developers transitioning from other frameworks by providing a type-safe UI construction method without replacing the traditional XAML/MVVM model.
- ▪Microsoft.UI.Reactor is an experimental framework designed for building WinUI 3 desktop apps.
- ▪Reactor allows for a declarative approach to UI development, enabling co-located state and type-safe UI construction.
- ▪Developers can continue using XAML and MVVM while also integrating Reactor components into their applications.
Hacker News (Newest) files mainly under programming. We currently carry 5,306 of its stories.
Story provenance
Source · retrieval · rights · ranking — open for full record
inspect →
Attribution is not the same as permission. This drawer separates discovery metadata, excerpts, WeSearch-generated summaries, reuse status, and whether the publisher receives the visit. Nothing here claims a legal grant the publisher has not made.
Record
| Original publisher | GitHub |
| Canonical URL | https://github.com/microsoft/microsoft-ui-reactor |
| Publication time | Sat, 30 May 2026 03:40:26 +0000 |
| Retrieval time | 2026-05-30T04:11:57.314Z |
| Last seen | 2026-05-30T04:11:57.314Z |
| Headline source | Publisher (no WeSearch rewrite) |
| Excerpt source | publisher body |
| Excerpt method | First ~120 words (~800 chars) of extracted publisher body, fair-use limited. |
| Summary | WeSearch · cerebras-chat (WeSearch summarizer) |
| Summary source text | contentText |
| Citation coverage | Summary is a WeSearch-generated derivative; primary citation is the original publisher URL. |
| Cluster | DFezl67jGflC |
| Cluster logic | Grouped by semantic title/content similarity across sources within a rolling window. Same-publisher template collisions are excluded from coverage comparison. |
| Ranking reason | Story pages are not engagement-ranked. Hub feeds use recency, with optional source-diversified chronological ordering (cap consecutive stories per source). No personalized ranking. |
| Publisher visit | Yes — open original |
| Substitutes article? | No — link-out required for full text |
Rights status (four layers)
WeSearch handling by dimension
| Indexing | May the item be indexed (stored, ranked, made findable)? | Allowed |
| Snippet | May a short excerpt of the publisher's text be shown? | Allowed |
| AI summary | May WeSearch generate its own short summary of the article? | Limited |
| Retrieval / RAG | May the content be exposed for third-party retrieval-augmented generation? | Not asserted |
| Model training | May the content be used to train AI models? | Not asserted |
| Commercial reuse | May the content be reused commercially? | Not permitted |
Basis: Derived from the published RSS/Atom feed. Contact: [email protected]. Reviewed: 2026-07-24.
Opening excerpt (first ~120 words) tap to expand
Microsoft.UI.Reactor A declarative, component-based C# framework for building WinUI 3 desktop apps. Status: Experimental · April 2026 What Reactor is — and isn't Reactor is not a new UI platform. It is a new way to describe WinUI content. Every control you render is a real WinUI control — Button, TextBox, NavigationView, TreeView — just authored differently. Apps built with Reactor interop freely with XAML, MVVM, existing controls, and the rest of the WinUI ecosystem. What Reactor adds on top of WinUI: A virtual element tree and reconciler that diff old vs.
…
Excerpt limited to ~120 words for fair-use compliance. The full article is at GitHub.