What is an IServiceProvider?
The IServiceProvider is responsible for resolving instances of types at runtime, as required by the application. These instances can be injected into other services resolved from the same dependency injection container. The ServiceProvider ensures that resolved services live for the expected lifetime.
How do I get IServiceProvider?
An instance of IServiceProvider itself can be obtained by calling a BuildServiceProvider method of an IServiceCollection . IServiceCollection is a parameter of ConfigureServices method in a Startup class. It seems to be magically called with an instance of IServiceCollection by the framework.
What is IServiceScopeFactory?
Essentially IServiceScopeFactory is the interface responsible for creating IServiceScope instances which are in turn responsible for managing the lifetime of IServiceProvider – which is the interface we use to resolve dependencies i.e. IServiceProvider.
What is a transient service?
Transient services are created every time they are injected or requested. Scoped services are created per scope. In a web application, every web request creates a new separated service scope. That generally means that they are created only one time per application and then used for whole the application life time.
What is IServiceCollection in .NET core?
ASP.NET Core allows us to register our application services with IoC container, in the ConfigureServices method of the Startup class. The ConfigureServices method includes a parameter of IServiceCollection type which is used to register application services. This will register ILog service as a singleton by default.
What is Microsoft extensions Dependencyinjection?
This tutorial shows how to use dependency injection (DI) in . NET. With Microsoft Extensions, DI is a first-class citizen where services are added and configured in an IServiceCollection. NET console app that uses dependency injection. Build and configure a Generic Host.
What is CreateScope?
CreateScope also is used for any root application containers like webhost service provider.Root application providers and all objects it create will live for the life of the application.If we resolve scoped or transient services from root container instance they will be created as singletons.Instead by using scope we …
Is IServiceScopeFactory a singleton?
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 IServiceScopeFactory is itself a singleton, which is why this works).
Are controllers transient?
(As a side note, controllers aren’t exactly transient, because by default they’re not created by the DI container at all.) One, this allows the controllers to have the HTTP context (including request and response) injected as members, easily accessible everywhere.
What is an IServiceCollection?
IServiceCollection is the collection of the service descriptors. We can register our services in this collection with different lifestyles (Transient, scoped, singleton) IServiceProvider is the simple built-in container that is included in ASP.NET Core that supports constructor injection by default.
What is auto FAC?
Autofac is an addictive IoC container for . NET. It manages the dependencies between classes so that applications stay easy to change as they grow in size and complexity. This is achieved by treating regular . NET classes as components.