Cannot consume scoped from singleton
WebMar 31, 2016 · As mentioned early .AddDbContext extension is adding it as scoped per request. So DI can not instantiate Scoped object to construct Singleton one. You must create and dispose instance of MyDbContext by yourself, it is even better because DbContext must be disposed after using as early as possible. WebMar 20, 2024 · 1 Answer. According to the ASP.NET Core DI Service lifetimes documentation: It's dangerous to resolve a scoped service from a singleton. It may cause the service to have incorrect state when processing subsequent requests. By default AddDbContext or AddDbContextPool register the DbContext as Scoped service. You …
Cannot consume scoped from singleton
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WebAug 22, 2024 · make your singleton service IDisposable, inject IServiceProvider, create and store an IServiceScope scope using the IServiceProvider.CreateScope () extension method, use that scope to create the the scoped service you need, dispose the service scope in the Dispose method. WebOct 20, 2024 · Do not resolve a scoped service from a singleton. It may cause the service to have incorrect state when processing subsequent requests. It's fine to: Resolve a singleton service from a scoped or …
WebDec 14, 2024 · IOptionsSnapshot is not working with singleton services aspnet/Options#247 Closed HaoK closed this as completed on Jan 17, 2024 ryanbrandenburg pushed a commit that referenced this issue on Nov 27, 2024 Remove appveyor file () 9b2e48f LordMike mentioned this issue on Dec 5, 2024 The first thing we want to do, is add a few lines to the ConfigureServices method of our startup.cs. This first time around, all services will be singletons. Now, let’s load our page and refresh if a few times and see what the output is. The results of 3 page refreshes look like so : So this makes sense. A singleton is one … See more So there is a little bit of code setup before we start explaining everything. The first thing we need is a “Child” service : The reason we have a property here called “CreationCount” is because later on we are going to test if a … See more The interesting thing about ASP.NET Core catching you from making a mistake when a scoped instance is within a singleton, is that the same … See more
WebSep 21, 2024 · The Solution To be able to use scoped services within a singleton, you must create a scope manually. A new scope can be created by injecting an IServiceScopeFactory into your singleton service (the …
WebMay 4, 2024 · In your singleton service, the IHostedService, inject an IServiceScopeFactory into it and use that to create a scope and get a new DbContext from it. For example: public class MyHostedService : IHostedService { private readonly IServiceScopeFactory _scopeFactory; public MyHostedService(IServiceScopeFactory …
WebJun 12, 2024 · Cannot consume scoped service from singleton #1840. Cannot consume scoped service from singleton. #1840. Closed. jlestercastro opened this issue on Jun 12, 2024 · 1 comment. portlaw historyWebJul 14, 2024 · Cannot consume scoped service from singleton. This is explained in the Background Service docs, in the Consuming a scoped service in a background … option thongs cross-stitchWebMar 5, 2024 · You must add EDevContext service before services.AddSingleton (); Edit: From the trace stack, that show your class EDevContext is addScopeService ,you need make the EDevContext and KReport as the same lifetimes. @SandeepThomas the problem is because singleton will allow only one instance of … portlaw power washingWebThe reason being when we add AddHostedService to the application or API the Service Instance gets added as SingleTon instance. As a good practice, EFCore DBContext should be set as a scoped instance. In fact, EFCore using AddDBContext lets you add a scoped instance of DBContext to be the default. option theory financeWebNov 16, 2024 · (Which works since LoginContext is also a scoped service). Also ParseCSVFile can be registered as singleton as there are no scoped dependencies. The problem now is that you cannot access the services directly from the singelton Worker. This is where IServiceScopeFactory does the trick. option thongsWebSep 24, 2024 · Resolve a singleton service from a scoped or transient service. Resolve a scoped service from another scoped or transient service. By default, in the development environment, resolving a service from another service with a longer lifetime throws an exception. For more information, see Scope validation. portlaw parishWebAug 12, 2024 · Whereas a “scoped” instance in ASP.net Core is “a new instance per page request” which cannot be fulfilled when the parent is singleton. Share Follow answered Aug 12, 2024 at 6:13 Barr J 10.5k 1 27 45 Add a comment Your Answer Post Your Answer By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and … option thnm not allowed