Ignore model property when binding with ASP.NET Core Options service

Question

I'm using the Options service to bind hierarchical configuration data.

But suppose I have a class like this:

public class PersonOptions
{

  public string Name { get; set; }

  public int Age { get; set; }

  public bool Foo {               // <--- I want binder to ignore this
    get {
      // ... do stuff
    }
  }

  public bool IgnoreMe =>         // <--- I want binder to ignore this
    throw new Exception();

}

Because the Foo property is public, the binder runs it and triggers some code that throws exceptions.

My design requires it to be public, and I prefer not to change it to a method.

Is there some attribute or override I can use to tell the binder to ignore that property?

Answer 1

The docs state:

All public read-write properties of the type are bound

If the property is public, then for some reason the binder runs it. Also, [JsonIgnore] isn't respected.

So unless I'm missing something obvious, this cannot be done.

The workarounds are:

• use a non-public property
• use a method instead of a property

I've added a feature request to the repo to support an "ignore" attribute.

UPDATE:
They've added the feature request to the backlog, so I assume what I wanted cannot be done, currently.