如何查看 c# 中 ref 属性的属性更改？

Question

If you have a reference property like this:

public class Foo {
    public ref Vector2 Bar {
        get => ref bar;
    }
    private Vector2 bar;
}

Is there a way to listen for changes when Bar is modified like this?

    set {
        position = value;
        NotifyPositionChanged(value);
    }

Ideally all of the notify functionality would be encapsulated within the Foo class but none of the solutions I can think of maintain that encapsulation.

Is this impossible or am I missing something?

Answer 1

You cannot define setter for a reference type property in C#.

Though you can create a method which will do the job like.

public void UpdateBar(Vector2 value)
{
    bar = value;
    NotifyPositionChanged(value);
}