reactiveui / reactiveui.uno

What is ReactiveUI?

ReactiveUI is a composable, cross-platform model-view-viewmodel framework for all .NET platforms that is inspired by functional reactive programming, which is a paradigm that allows you to abstract mutable state away from your user interfaces and express the idea around a feature in one readable place and improve the testability of your application.

🔨 Get Started 🛍 Install Packages 🎞 Watch Videos 🎓 View Samples 🎤 Discuss ReactiveUI

Book

There has been an excellent book written by our Alumni maintainer Kent Boogart.

NuGet Packages

Install the following packages to start building your own ReactiveUI app. Note: some of the platform-specific packages are required. This means your app won't perform as expected until you install the packages properly. See the Installation docs page for more info.

Platform	ReactiveUI Package	NuGet
Platform Uno	ReactiveUI.Uno
Platform Uno	ReactiveUI.Uno.WinUI

Sponsorship

The core team members, ReactiveUI contributors and contributors in the ecosystem do this open-source work in their free time. If you use ReactiveUI, a serious task, and you'd like us to invest more time on it, please donate. This project increases your income/productivity too. It makes development and applications faster and it reduces the required bandwidth.

Become a sponsor.

This is how we use the donations:

• Allow the core team to work on ReactiveUI
• Thank contributors if they invested a large amount of time in contributing
• Support projects in the ecosystem

Support

If you have a question, please see if any discussions in our GitHub issues or Stack Overflow have already answered it.

If you want to discuss something or just need help, here is our Slack room, where there are always individuals looking to help out!

Please do not open GitHub issues for support requests.

Contribute

ReactiveUI is developed under an OSI-approved open source license, making it freely usable and distributable, even for commercial use.

If you want to submit pull requests please first open a GitHub issue to discuss. We are first time PR contributors friendly.

See Contribution Guidelines for further information how to contribute changes.

Core Team

Glenn Watson Melbourne, Australia	Rodney Littles II Texas, USA	Artyom Gorchakov Moscow, Russia
Colt Bauman South Korea	Chris Pulman United Kingdom

.NET Foundation

ReactiveUI is part of the .NET Foundation. Other projects that are associated with the foundation include the Microsoft .NET Compiler Platform ("Roslyn") as well as the Microsoft ASP.NET family of projects, Microsoft .NET Core & Xamarin Forms.

reactiveui.uno's Issues

[ReactiveUI.Uno] WebAssembly RxApp.TaskpoolScheduler should return WasmScheduler

Currently, multithreading is not supported in WebAssembly.
When developing for Uno, at the moment I have to explicitly override TaskPoolScheduler so that the code works on all platforms.

[BUG] Uno.WinUI RxApp.MainThreadScheduler.Schedule not on main thread

Describe the bug
Using ReactiveUI.Uno.WinUI, my ViewModel throws RuntimeExceptions like 'The application called an interface that was marshalled for a different thread', despite using ObserveOn(RxApp.MainThreadScheduler).

Also code like RxApp.MainThreadScheduler.Schedule(() => IsBusy = false), the delegate is not executed on the main thread.

Steps To Reproduce

Small solution based on latest visual studio Uno template, Windows only.

UnoWinUI_ReactiveUI_MainThreadScheduler.zip

Provide the steps to reproduce the behaviour:

1. type something in the search textbox.
2. A TextBlock bounded to ViewModel.SearchResult ends in the error.
   ​

Expected behaviour
I am expecting the viewmodel property SearchResult to be set on the main thread, so it does not throw the 'marshalled for a different thread' exception.

Environment

• Windows: 11 Pro 22000.1042
• ReactiveUI Version: 18.3.1
• ReactiveUI.Uno.WinUI Version: 18.1.20

Dependency Dashboard

This issue lists Renovate updates and detected dependencies. Read the Dependency Dashboard docs to learn more.

Pending Status Checks

These updates await pending status checks. To force their creation now, click the checkbox below.

• chore(deps): update dependency microsoft.windowsappsdk to v1.5.240404000
• chore(deps): update xunit-dotnet monorepo (xunit, xunit.runner.console, xunit.runner.visualstudio)
• chore(deps): update dependency verify.xunit to v24

Open

These updates have all been created already. Click a checkbox below to force a retry/rebase of any.

• chore(deps): update dependency coverlet.msbuild to v6.0.2
• chore(deps): update dependency dotnet-sdk to v8.0.204
• chore(deps): update dependency uno.ui to v5.1.104
• chore(deps): update dependency uno.winui to v5.1.104
• chore(deps): update dependency roslynator.analyzers to v4.12.0
• chore(deps): update dependency verify.xunit to v23.7.2
• Click on this checkbox to rebase all open PRs at once

Detected dependencies

github-actions

.github/workflows/ci-build.yml

.github/workflows/lock.yml

• dessant/lock-threads v5

.github/workflows/release.yml

nuget

src/Directory.build.props

• Roslynator.Analyzers 4.11.0
• stylecop.analyzers 1.2.0-beta.556
• Nerdbank.GitVersioning 3.6.133
• Microsoft.SourceLink.GitHub 8.0.0
• Verify.Xunit 23.5.2
• coverlet.msbuild 6.0.1
• PublicApiGenerator 11.1.0
• Microsoft.Reactive.Testing 6.0.0
• FluentAssertions 6.12.0
• Xunit.StaFact 1.1.11
• xunit.runner.visualstudio 2.5.7
• xunit.runner.console 2.7.0
• xunit 2.7.0
• Microsoft.NET.Test.Sdk 17.9.0

src/ReactiveUI.Uno.WinUI/ReactiveUI.Uno.WinUI.csproj

• Uno.WinUI 5.1.80
• Microsoft.WindowsAppSDK 1.5.240311000
• Microsoft.Windows.SDK.BuildTools 10.0.22621.3233

src/ReactiveUI.Uno/ReactiveUI.Uno.csproj

• Uno.UI 5.1.80

src/global.json

• dotnet-sdk 8.0.201
• MSBuild.Sdk.Extras 3.0.44

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