Translating Ninject to ASP.NET MVC 6 DI

让人想犯罪 __ 提交于 2019-12-04 19:25:54


I am trying to get into the new ASP.NET MVC 6 stuff, but I'm having a very hard time with their new DI system. I have tried to find resources online, but everything I find covers only the absolute most bare minimum to use it.

I was previously using Ninject, and I have several wire-ups that work like this:

    .ToMethod(c => CreateDocumentStore())

private static IDocumentStore CreateDocumentStore() {
    // lots of initialization code, etc.
    return documentStore;

But so far I am having a difficult time finding out how to translate this kind of behaviour to Microsoft's new DI system. All I can find are examples like this:

services.AddTransient<IEmailSender, AuthMessageSender>();
services.AddTransient<ISmsSender, AuthMessageSender>();



Where everything seems to work entirely on the default constructor for the target service. Is there any way to produce the behaviour I am needing in this new DI system?

I've seen the

services.Configure<TOptions>(options => {});

But I'm not really clear on whether that will do what I am thinking, or if it is reserved for specific behaviours.


The AddTransient method has various overloads, one of which accepts a lambda expression:

services.AddTransient<IDocumentStore>(s => CreateDocumentStore());

However it seems you are using the Ninject InSingletonScope() modifier so this may be more appropriate:

services.AddSingleton<IEmailSender>(s => CreateDocumentStore());

Additional note: There is some pre-release documentation available (of course, it's not complete and may be incorrect but may help)


Also you could continue use Ninject by adding Microsoft.Framework.DependencyInjection.Ninject to your project and then configure it with following code:

public IServiceProvider ConfigureServices(Microsoft.Framework.DependencyInjection.IServiceCollection services)
    var kernel = CreateMyKernel();
    kernel.Populate(services); // Wire up configured services and Ninject kernel with Microsoft tool
    return kernel.Get<IServiceProvider>();