Inject IConfiguration and IOptions in ASP.Net Core 2.0 via Ninject

[Vetsoo]

I want to read out my appsettings.json file to use it in different layers of my application via Ninject DI. However, I can't seem to find any way to bind the IConfiguration or the IOptions class. All the information I find online is about the build in core DI system but nothing about Ninject. I always get a Ninject.ActivationException. Could anyone share how they did this if this is possible?

[khanzzirfan]

hi, Im looking for the same information.
Could someone please help in getting the settings right for Ioptions.

[khanzzirfan]

Ok, I have got the IOptions working with strongly typed class and Injecting in to Controllers.
Please see the code below.

I followed what mentioned in this blog, setting up Ninject in .net core.
https://dev.to/cwetanow/wiring-up-ninject-with-aspnet-core-20-3hp

now my app settings.json looks like

"AppConfiguration": {
    "FeatureFlags": [
      {
        "Name": "feature1",
        "Status": "on",
        "PilotUsers": [ "" ]
      },
      {
        "Name": "feature2",
        "Status": "pilot",
        "PilotUsers": [ "lanid1", "lanid2", "lanid3" ]
      },
      {
        "Name": "feature3",
        "Status": "off",
        "PilotUsers": [ "lanid4", "lanid5", "lanid6" ]
      }

    ]
  }

Create a strongly typed class AppConfigOptions.cs, This class implements IOptions interface and returns Value.

 public class AppConfigOption: IOptions<AppConfiguration>
    {
        private readonly AppConfiguration _appConfiguration;
        public AppConfigOption(AppConfiguration appConfiguration)
        {
            _appConfiguration = appConfiguration;
        }

        public AppConfiguration Value => _appConfiguration;
    }

Now we bind the above class in NinjectWebCommon.cs

 var appConfiguration = configProvider.GetSection("AppConfiguration").Get<AppConfiguration>();

 // we want app configuration in controller;
  kernel.Bind(typeof(IOptions<AppConfiguration>))
    .To(typeof(AppConfigOption))
    .WithConstructorArgument(appConfiguration);

That's all done binding now. Lets make use of it.
I have controller AppController

public class AppController : Controller
    {
        private IFeatureFlagServices _featureFlagService;
        private IOptions<AppConfiguration> _appConfiguration;
       
        public AppController (IFeatureFlagServices featureFlagService, IOptions<AppConfiguration> appConfiguration )
        {
            _featureFlagService = featureFlagService;
            _appConfiguration = appConfiguration ;
        }
}

Hope this helps others.

[RavindraMehta16]

I am unable to identify the Type for configProvider in the below snippet

var appConfiguration = configProvider.GetSection("AppConfiguration").Get();

Could you please explain that?

[refex]

I am unable to identify the Type for configProvider in the below snippet

var appConfiguration = configProvider.GetSection("AppConfiguration").Get();

Could you please explain that?

It's Microsoft.Extensions.Configuration.IConfiguration