SimpleMessenger

A simple, lightweight event messenger that uses a ConditionalWeakTable internally. Handlers are automatically removed when the subscriber is garbage-collected.

NuGet: https://www.nuget.org/packages/Bitbound.SimpleMessenger

Usage

// Program.cs
using Bitbound.SimpleMessenger;

// ...

services.AddSingleton<IMessenger>(WeakReferenceMessenger.Default);

// MyService.cs

public class MyService : IMyService
{
    public MyService(IMessenger messenger)
    {
        // Registers a handler under the default channel.
        // The handler will be removed automatically if
        // this MyService instance is garbage-collected.
        messenger.Register<SomeMessageType>(this, MyHandler);
    }

    private async Task MyHandler(object subscriber, SomeMessageType message)
    {
        // Handle the message.
    }
}