Help Required

[abomadi]

Im trying to use MediatR across multiple class libraries as the following :

- Project 1 >> Raise INotification<EventTest>
- Project 2 >> Handle INotificationHandler<EventTest>
- Project 3 >> Handle INotificationHandler<EventTest>

if i create handler withing the same class library it works well, however Project 2 and 3 handlers are never triggered, i register all the above using Microsoft DI and Scrutor any help plz ?

[lilasquared]

Most likely you are not scanning project 2 or 3 during start up. Please share the code you are using to register your handlers.

[abomadi]

@lilasquared

services.AddMediatR();
            services.Scan(scan => scan
             .FromAssembliesOf(typeof(IMediator), typeof(TestEvent), typeof(TestCommand)
             , typeof(TestEventHandler))
             .AddClasses()
             .AsImplementedInterfaces());

i call all the required assemblies here FromAssemblies, also all handlers are registered as services.AddScoped<IRequestHandler<TestCommand>, TestCommandHandler>();

[lilasquared]

Doesn't the AddMediatR method accept assemblies to scan as parameters? Have you tried that? If you are using the MicrosoftDI MediatR extension it should handle registering the handlers for you.

[abomadi]

@lilasquared Yes it does tried both cases actually, as the following:

services.AddMediatR(typeof(IMediator), typeof(TestEvent), typeof(TestCommand), typeof(TestEventHandler));
services.AddScoped<IRequestHandler<TestCommand>, TestCommandHandler>();

all projects are referenced to this one and this is being called on Startup

[lilasquared]

It's going to be hard to help out with this without more info about the project. Are you able to create a small sample project that replicates the behavior that you can share?

[abomadi]

@lilasquared here is a sample project MediatRTest

[jbogard]

I think this is in the wrong repository, if you're using the DI extension.

[jbogard]

You shouldn't need to register notification handlers, AddMediatR does that already.