ASP.NET provides a handy JsonConstructor annotation for deserializing a complex type from a string:

public record Point
{
    public int X { get; init; }
    public int Y { get; init; }

    [JsonConstructor]
    public Point(string point)
    {
        var m = Regex.Match(point, @"(d+),(d+)");
        X = int.Parse(m.Groups[0].Value);
        Y = int.Parse(m.Groups[1].Value);
    }
    
    public override string ToString()
    {
        return $"{X},{Y}";
    }
}

Now, Point will be deserialized as intended from strings like "7,2".

Is there a simple way to do the reverse, i.e. have Point serialize using the ToString() method?