Can I make an ASP.NET Core controller internal?

Question

ASP.NET (and Core) controllers need to be public.

Problem is I have a controller which depends (in its constructor) on something internal.

Answer 1

Sou you have this (it always helps to include a MCVE in your question):

internal class FooDependency
{

}

public class FooController
{
    public FooController(FooDependency dependency)
    {
        // ...
    }
}

And you can't make FooDependency public, but you need FooController to be public?

Then you need to apply a public interface to the internal dependencies:

public interface IFooDependency
{

}

internal class FooDependency : IFooDependency
{

}

public class FooController
{
    public FooController(IFooDependency dependency)
    {
        // ...
    }
}