I have a class that is automatically generated from XML and contains a property Item which can be of different types based on the OrderType enum. Here’s a simplified structure:

public class GeneratedFromXml
{
    public string Name { get; set; }
    public OrderType OrderType { get; set; }

    [XmlElement("Service", typeof(TransportElement), IsNullable = true)]
    [XmlElement("Transport", typeof(Transport), IsNullable = true)]
    public object Item { get; set; }
}

public class Transport
{
    public TransportElement PickUp { get; set; }
    public TransportElement Delivery { get; set; }
}

public class TransportElement
{
    public Address Address { get; set; }
    public DateTime? ArrivalTime { get; set; }
    
    // other properties
}

Depending on the OrderType, Item can be either a Transport (containing two TransportElement instances) or a single TransportElement. I need to map this structure to an interface that will be implemented by a class exposed to an API.

My idea was to use an array of TransportElement, which could have one or two elements based on OrderType but I’m open to other suggestions.

Here is an example of how the MappingService is accessed in my existing application. Though this particular FromXml class is not nested and doesn’t contain any dynamic objects.

private IObservable<IMappingResult<FromXml, IForApi, CustomData>> Map(FromXml input) 
{
    return MappingService.MapAsync<IMappingResult<FromXml, IForApi, CustomData>>(input);
}

I’ve only just started using AutoMapper and this is a little beyond my knowledge. Any help is appreciated.