typeof(Member)

[TonyValenti]

Many attributes accept a type parameter.
Today, you have to specify a type directly.
It would be really nice if you could specify a member name as well.
For example:

    [KnownType(typeof(Value))]
    public record Parent {
        public Child? Value { get; init; }
    }

    public record Child {

    }

[BreyerW]

I dont think this is feasible w/o new syntax as this can be ambigious with class named the same as member. Cant dot off of containing class either since nested classes are allowed in c# too