How do I manually register FluentValidation validators, in ASP.NET Core?

Question

I'm using ASP.NET Core, with the built-in container.

Registration is supposed to be done like so:

services
  .AddMvc()
  .AddFluentValidation(fv => fv.RegisterValidatorsFromAssemblyContaining<Startup>())

This automatically:

1. configures FluentValidation
2. registers all validators found in the assembly

But I want to register my validators manually. How do I do that?

Answer 1

// must first setup FV
services
    .AddMvc()
    .AddFluentValidation(fv => {});

// can then manually register validators
services.AddTransient<IValidator<Foo>, FooValidator>();
services.AddTransient<IValidator<Bar>, BarValidator>();