Is it possible to inject a specific configuration class bound as a suboption and not to IConfiguration<MyType>?

Question

I have a class that I want injected into some controllers. It has a few dependencies that I want to be automatically injected. Specifically this class requires a configuration object be passed in.

So my appsettings.json file looks something like this:

{
    "MyType": {
        "Option1": "value"
    }
}

And I have a class that mirrors this, ex.

public class MyTypeConfig
{
    public string Option1 { get; set; }
}

I have registered this in my startup class.

services.Configure<MyTypeConfig>(Configuration.GetSection("MyType"));

However, I want to receive a "naked" version of MyTypeConfig in the class being instantiated, NOT IConfigureOptions<MyTypeConfig> which is what the DI system seems to want to inject.

The constructor for the class being injected looks liked this (which works):

public MySampleClass(IHttpClientFactory httpClient, IConfigureOptions<MyTypeConfig> configuration, ILogger<MySampleClass> logger)

However, this is really want I want:

public MySampleClass(IHttpClientFactory httpClient, MyTypeConfig configuration, ILogger<MySampleClass> logger)

I've looked through the topic on the Microsoft site, here:

https://docs.microsoft.com/en-us/aspnet/core/fundamentals/configuration/options?view=aspnetcore-2.2

But I'm not really finding an answer.

How can I just inject the MyTypeConfig?

Answer 1

Get the class from configuration during startup and register it with the service collection.

MyTypeConfig config = Configuration.GetSection("MyType").Get<MyTypeConfig>();
services.AddSingleton<MyTypeConfig>(config);

Reference Configuration in ASP.NET Core : Bind to an object graph

Answer 2

In 2022, imho, there is a better way to do that

Reference