MySettingsValidator PostConfigureOptions implementation

3.Post.SettingsValidation.MySettingsValidator.cs

public class MySettingsValidator : IPostConfigureOptions<MySettings>
{
	public void PostConfigure(string name, MySettings options)
	{
		if (options.Validate())
		{
			return;
		}

		throw new InvalidOperationException($"Invalid {nameof(MySettings)} options. {string.Join(",", options.ValidationResult)}");
	}
}

4.Post.SettingsValidation.Startup.cs

public class Startup
{
	// ... código omitido
	
	public void ConfigureServices(IServiceCollection services)
	{
		services.AddSingleton(Configuration);

		services.Configure<MySettings>(Configuration.GetSection("MySettings"));
		services.ConfigureOptions<MySettingsValidator>();
	}
}