IServiceCollection
IServiceCollection is a .NET interface representing service descriptors and registrations used to configure a dependency-injection container.
ASP.NET Core in Action, 3e
IServiceCollection is the ASP.NET Core abstraction representing the collection of service registrations available to an application.
- How it is used
- Registers framework and application services that ASP.NET Core’s dependency-injection container must provide at runtime.
- How deep it goes
- Explains registration, extension methods, dependency resolution, and the Build boundary without detailing container internals.
- Examples
- Uses AddHttpLogging(), AddRazorPages(), custom services, and the Build() boundary as concrete examples.
- What you can do after
- Apply it via WebApplicationBuilder.Services to register framework features and application dependencies before building the app.
Read how ASP.NET Core in Action, 3e explains IServiceCollection →
Building Web APIs with ASP.NET Core
A service collection is a registry of application services and their dependency-injection configurations.
- How it is used
- Registers the main gRPC services in Program.cs before they enter the HTTP pipeline.
- How deep it goes
- Shows one registration call but does not descend into the collection’s internals or dependency-injection resolution process.
- Examples
- Uses builder.Services.AddGrpc() alongside app.MapGrpcService<GrpcService>() in the application startup configuration.
- What you can do after
- Operate/configure a gRPC server by registering its framework services in the application startup pipeline.
Read how Building Web APIs with ASP.NET Core explains IServiceCollection →
Related concepts
- dependency injectionused by · Dependency injection is a software design technique in which a component receives its dependencies from outside rather than creating or locating them internally.
- services propertyincludes · The Services property is a WebApplicationBuilder property exposing the service collection used to register application and framework dependencies for dependency injection.
- ServiceRegistryincludes · ServiceRegistry is Lamar's service-registration type for configuring registered services and their dependencies.
- constructor injectionused by · Constructor injection is a dependency-injection technique that supplies an object's required dependencies through its constructor when the object is created.
- HostBuilderused by · HostBuilder is a .NET hosting API type that configures and constructs an application host.
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