DBcontext error

[stoppiNeobiz]

An error occurred while accessing the Microsoft.Extensions.Hosting services. Continuing without the application service provider. Error: Some services are not able to be constructed (Error while validating the service descriptor 'ServiceType: EntitySignal.Services.EntitySignalSubscribe Lifetime: Transient ImplementationType: EntitySignal.Services.EntitySignalSubscribe': Unable to resolve service for type 'Microsoft.AspNetCore.Http.IHttpContextAccessor' while attempting to activate 'EntitySignal.Services.EntitySignalSubscribe'.) Unable to create an object of type 'MyDbContext'.

[dustout]

What version of .net are you using?

[dustout]

While reading the exception it sounds like it is having an issue accessing the httpcontext.

Is this being done in a singleton service?

[VasilVerdouw]

I know this is quite old but for others still wondering. I had a similar issue and to fix it I added services.AddHttpContextAccessor(); when configuring services and that seemed to have fixed it.

So for example:

private void ConfigureServices(IServiceCollection services)
{
    // Other code here ...
    services.AddSignalR();
    services.AddHttpContextAccessor();
    services.AddEntitySignal();
}

Might be worth putting in to the tutorial if I'm correct.

[dustout]

Thank you for the fix @VasilVerdouw :)

I have updated the docs to reflect your change