CODEWITHSUNDEEP
c#.net-coreasp.net-core-hosted-services
jstuardo
jstuardo

Reputation: 4405

How to inject a hosted service when it also implements other interface

I have the following interface in my .NET Core web application:

public interface IIntegrationManagerService : IHostedService
{
    Task<List<IFunciones>> GetFunctionList();
}

The implementation is as follows:

public class IntegrationManagerService : IIntegrationManagerService, IDisposable

I am adding in Program.cs this way:

services.AddHostedService<IIntegrationManagerService>();

When doing that, an exception is thrown when services are built.

If I change the above line with this:

services.AddHostedService<IntegrationManagerService>();

Services are built, but an exception is thrown when the class where the object is to be injected is instantiated.

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If I inject IHostedService no exception is thrown, but I cannot use IIntegrationManagerService methods.

How can I do it?

I tried by adding a singleton, but Start method of the service obviously is not called.

Upvotes: 0

Views: 190

Answers (1)

Jeff Zola
Jeff Zola

Reputation: 73

Are you trying to reference your Hosted Service from a controller? If I recall, Hosted Services are added to the DI Container with scoped lifetime. They can be pulled from the IServiceProvider if you inject it into your controller:

    var scope = serviceProvider.CreateScope();
    var service = scope.ServiceProvider.GetRequiredService<IIntegrationManagerService>();

If this doesn't work, you can configure your hosted service to be responsive to events raised within the controller. This might be considered an anti-pattern, but would provide a viable, reusable solution.

Good luck!

Upvotes: 0

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