在 Azure Function 中引用类库 .dll 文件，是否需要在 Startup.cs 中设置服务？

Question

I've setup DI in my Azure Function by using Microsoft.Azure.Functions.Extensions.DependencyInjection and Microsoft.Extensions.DependencyInjection . So this is my startup:

public class Startup : FunctionsStartup
{
    public override void Configure(IFunctionsHostBuilder builder)
    {
        builder.Services.AddTransient<IThingFactory, ThingFactory>();
    }
}

This works fine within the project however I have added a reference to SomeOtherProject.dll (One of my class library projects).

My question is: do i need to setup services for each of the interfaces & implementations from SomeOtherProject that i'll be using?

Answer 1

That depends on you.

If you want to use Dependency Injection of Azure function (it's recommended), you should always setup services for each of the interfaces & implementations from SomeOtherProject.dll .

For example, in SomeOtherProject.dll , you have an interface named IRepository and a class named Repository which implements the interface. And then in the azure function, you reference this SomeOtherProject.dll , you want to use Dependency injection like this sample , you must register them in the Startup class like this builder.Services.AddSingleton<IRepository, Repository>();

But if you don't choose to use Dependency Injection , there is no need to do that, just use them directly.

Answer 2

I think it is no need. if you are using dll reference, after adding references,it should be free to use SomeOtherProject's interfaces and implementations.