asp.net-core-2.1

This is a follow-up to another question and answer . What's the effect of calling HubContext.Clients.Caller or HubContext.Clients.Others from the controller? I see it depends on the connection ID . What value would it have in this situation? If the connection ID (and thus Caller and Others ) is invalid then (from within the controller action) how could I obtain a connection ID (for the client currently calling the Web API) that I could use with HubContext.Clients 's methods? What's the effect of calling HubContext.Clients.Caller or HubContext.Clients.Others from the controller? I see it

As pointed out in this anwer to Asp.Net Core 2.1 ApiController does not automatically validate model under unit test , the automatic ModelState validation that ASP.NET Core 2.1's ApiControllerAttribute gives us only works when actualyy requestion the action at runtime, not by calling it with an invalid parameter in a unit test. However, I still want to test if my action actually returns a BadRequestResult when supplying an incorrect model. Is there any way of doing this? I get that I can still manually check if ModelState.IsValid is false, and returning BadRequest() myself, but that kind of

I am attempting to reference an Inline Table-Valued Function (ITVF) in a Linq query: var results = await ( from v in _context.Vehicles from r in _context.UnitRepairStatus(v.VehicleNumber) <-- ITVF reference orderby v.VehicleNumber select new FooViewModel { ID = v.ID, VehicleNumber = v.VehicleNumber, InRepair = Convert.ToBoolean(r.InRepair) <-- ITFV field } ).ToListAsync(); When the query runs, it generates an error: InvalidOperationException: A second operation started on this context before a previous operation completed. Any instance members are not guaranteed to be thread safe. with a

What is proper way to register custom hosted service in ASP.NET Core 2.1? For example I have custom hosted service derived from BackgroundService named MyHostedService . How should I register it? public IServiceProvider ConfigureServices(IServiceCollection services) { //... services.AddSingleton<IHostedService, MyHostedService>(); } or public IServiceProvider ConfigureServices(IServiceCollection services) { //... services.AddHostedService<MyHostedService>(); } ? Here we can see first case, but here there is second case. Are these methods equal? They are similar but not completely

I know this question has been answered, but I don't understand what people exactly do (about certificates, ssl) and they all use a localhost but not me. I used this sample as my example OpenIdConnect I'm using: A web app A web API Both are using .Net Core 2.1. The Web App is using the Azure AD connection to get a JwtBearer token, that is sent to the API. Seeing the route /api/information in the API, a request is sent from the Web App to the API, and the API is returning the error above. The exact error is: System.InvalidOperationException: IDX20803: Unable to obtain configuration from: 'https: