We'll be focusing on the ConfigureServices method and performing registration through the IServiceCollection interface.

Throughout this video, We'll see the behavior of our HelloWorldService change. We will inject the HelloWorldService into a Razor page, and the changes will become clear as we switch between the registration types in ConfigureServices.

We'll first register our dependency as Transient. The creation of our HelloWorldService will occur every time our application asks for an instance. Changing our registration to Scoped will create a single instance for each new web request. Finally, registering a dependency as a Singleton will limit our HelloWorldService to a single instance for the duration of our application's run.

By changing the registration of our dependencies, we can dramatically alter the behavior in our ASP.NET application.

See Also

• Microsoft Docs Startup
• Dependency Injection
• ASP.NET
• .NET