Supporting multiple dateFormats when using DateTimeConverter and NullableDateTimeConverter

[NascarSean]

I have been trying to implement a way to allow this but it's unable to be deserialized successfully.
Example code
protected override bool InternalConvert(string value, out DateTime result) { string[] formats = { "M/d/yyyy", "yyyyMMdd" }; return DateTime.TryParseExact(value, formats, CultureInfo.InvariantCulture, DateTimeStyles.None, out result); }

But I find this is unsupported in every attempt to implement due to the serialization of the ArrayConversion, and I was curious if there was a reason to limit the implementation initially?