How do I set up dependency injection in ASP.NET Core?

How do I set up dependency injection in ASP.NET Core?

To set up dependency injection in ASP.NET Core, you typically register your services in the Startup.cs file within the ConfigureServices method.

Can you give me an example of registering a service?

Sure! For example, you can register a service like this: services.AddScoped<IMyService, MyService>(); This registers MyService as the implementation for IMyService.

What is the difference between AddSingleton, AddScoped, and AddTransient?

AddSingleton creates a single instance for the entire application, AddScoped creates an instance per request, and AddTransient creates a new instance each time it's requested.

How do I inject a service into a controller?

You can inject a service into a controller by adding it as a parameter in the controller's constructor, like this: public MyController(IMyService myService) { _myService = myService; }.