CleanArch.DevKit.Messaging 0.1.0-preview.1

.NET 10.0 This package targets .NET 10.0. The package is compatible with this framework or higher.
This is a prerelease version of CleanArch.DevKit.Messaging.
There is a newer version of this package available.
See the version list below for details. 
dotnet add package CleanArch.DevKit.Messaging --version 0.1.0-preview.1
                    


                    

                
NuGet\Install-Package CleanArch.DevKit.Messaging -Version 0.1.0-preview.1
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package. 
<PackageReference Include="CleanArch.DevKit.Messaging" Version="0.1.0-preview.1" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
<PackageVersion Include="CleanArch.DevKit.Messaging" Version="0.1.0-preview.1" />
                    


                            Directory.Packages.props
                        

                    

                
<PackageReference Include="CleanArch.DevKit.Messaging" />
                    


                            Project file
For projects that support Central Package Management (CPM), copy this XML node into the solution Directory.Packages.props file to version the package. 
paket add CleanArch.DevKit.Messaging --version 0.1.0-preview.1
                    


                    

                
#r "nuget: CleanArch.DevKit.Messaging, 0.1.0-preview.1"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package. 
#:package CleanArch.DevKit.Messaging@0.1.0-preview.1
#:package directive can be used in C# file-based apps starting in .NET 10 preview 4. Copy this into a .cs file before any lines of code to reference the package. 
#addin nuget:?package=CleanArch.DevKit.Messaging&version=0.1.0-preview.1&prerelease
                    


                            Install as a Cake Addin
                        

                    

                
#tool nuget:?package=CleanArch.DevKit.Messaging&version=0.1.0-preview.1&prerelease
                    


                            Install as a Cake Tool

CleanArch.DevKit.Messaging

In-process publish/subscribe messenger with sync + async dispatch. Subscriptions return IDisposable tokens (no manual Unsubscribe). Includes an opt-in WeakMessenger for MVVM scenarios where subscribers forget to dispose. Standalone — no mediator dependency.

Part of the CleanArch.DevKit toolkit.

Install

dotnet add package CleanArch.DevKit.Messaging

When to use

Use this When
IMessenger (this package) Runtime subscribe/unsubscribe — UI, ViewModels, plug-in modules
INotification (Mediator) Design-time DI-registered handlers — domain events, application events

The two complement each other.

Quick start

services.AddMessenger();

// in a ViewModel
public sealed class HeaderViewModel : IDisposable
{
    private readonly IDisposable _subscription;

    public HeaderViewModel(IMessenger messenger)
    {
        _subscription = messenger.Subscribe<UserSignedIn>(OnUserSignedIn);
    }

    private void OnUserSignedIn(UserSignedIn evt)
        => Console.WriteLine($"Welcome {evt.Email}");

    public void Dispose() => _subscription.Dispose();
}

// publish
var messenger = provider.GetRequiredService<IMessenger>();
messenger.Send(new UserSignedIn("alice@example.com"));

Async handlers

var subscription = messenger.SubscribeAsync<UserSignedIn>(async (evt, ct) =>
{
    await SendWelcomeEmail(evt.Email, ct);
});

await messenger.SendAsync(new UserSignedIn(...));

SendAsync invokes sync handlers first, then async handlers sequentially. Send only invokes sync handlers — async handlers are silently skipped.

WeakMessenger

For MVVM apps where you don't want to remember to call Dispose:

services.AddWeakMessenger(); // instead of AddMessenger

Stores instance handlers as WeakReference<object> + MethodInfo. When the subscriber is garbage-collected, the entry is evicted on the next dispatch. Static methods and no-capture lambdas remain strongly referenced.

Footgun: lambdas with captured locals create a compiler-generated closure whose only owner is the messenger — the GC can collect it and the handler silently stops firing. Either use an instance method, or keep a strong reference to the subscription token.

Exception model

Subscriber exceptions propagate — no swallowing. Wrap your own try/catch if you need isolation.

License

MIT — see LICENSE.

Product Compatible and additional computed target framework versions.
.NET net10.0 is compatible.  net10.0-android was computed.  net10.0-browser was computed.  net10.0-ios was computed.  net10.0-maccatalyst was computed.  net10.0-macos was computed.  net10.0-tvos was computed.  net10.0-windows was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

NuGet packages

This package is not used by any NuGet packages.

GitHub repositories

This package is not used by any popular GitHub repositories.

Version Downloads Last Updated
1.1.1 90 5/17/2026
1.1.0 85 5/17/2026
1.0.0 100 5/15/2026
0.1.0-preview.1 42 5/14/2026