I have a Identity class that is extended by two classes StringIdentity and GuidIdentity. I want to use them in Objects as Property and save them in a MongoDb. For Example a class would look like this:

 public class MyEvent : IDomainEvent
{ 
    public MyEvent(GuidIdentity entityId)
    {
       EntityId = entityId;
    }
   public Identity EntityId { get; }
}

IDomainEvent forces me to implement the Identity Property, so I can (and do not want to) change the property type to GuidIdentity.

When I deserialize my class I get an exception like this:

Creator map for class Microwave.Eventstores.UnitTests. MyEvent has 1 arguments, but none are configured.

Which seems logical according to the .net driver documentation, as my property does not match the type of the parameter and therefore can not be serialized. I had the solution to use the Identity as constructor parameter or make the constructor private and instantiate the class with a static Create method that takes the GuidIdentity as parameter. I also messed around with the BsonClassMap, but I really do not want to write all this kind of duplicate code for every class that implements IDomainEvent

So is there a way to tell the .net Driver to use the concrete class from the constructor instead of the more general PropertyType for all Types? Like in Newtonsoft, you can define a handler for a specific type (in this case GuidIdentity), that gets used when the serializer hits a specific type.

I am very new to mongodb so I am not aware of all the tricks that come with it, maybe someone can help me out here.