Serialization problems with version 2.19+

Working with Data Drivers
1

I fight with the serialitation of a list after updating my driver at 2.22.0.
I got this exception:

Type System.Collections.Generic.List`1[[MyNameSpace.Entity, MyNameSpace, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]] is not configured as a type that is allowed to be serialized for this instance of ObjectSerializer.

I saw the release notes for 2.19.0 and add this to my code:

var objectSerializer = new ObjectSerializer(type => ObjectSerializer.DefaultAllowedTypes(type) || type.FullName.StartsWith("MyNamespace"));
BsonSerializer.RegisterSerializer(objectSerializer);

And got this exception:

MongoDB.Bson.BsonSerializationException : There is already a serializer registered for type Object.

Could you please help me understand what I am doing wrong here?

Thank you for your time and support.

2

Make sure you’re registering

ObjectSerializer

only once around your code base.

3

I checked it. :frowning:
Search for “ObjectSerializer” in hole solution

image
image1016×207 8.4 KB

4

Seems like your app is trying to add the serializer twice. You could use this line

BsonSerializer.TryRegisterSerializer(objectSerializer);

instead of

BsonSerializer.RegisterSerializer(objectSerializer);