I upgraded to version 2.3.3 from 2.0.0.668 and I now get an error when serializing a class that contains a dictionary with a nullable type.
[ProtoMember(17)]
public Dictionary<String, bool?> Mapping { get; set; }
ProtoBuf.ProtoException
HResult=0x80131500
Message=Data of this type has inbuilt behaviour, and cannot be added to a model in this way: System.Nullable`1[[System.Boolean, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]] (Griffeye.Domain.EntityCriteria.DigestSourceImportCriteria)
Source=protobuf-net
StackTrace:
at ProtoBuf.Meta.RuntimeTypeModel.GetKey(Type type, Boolean demand, Boolean getBaseKey) in C:\code\protobuf-net\src\protobuf-net\Meta\RuntimeTypeModel.cs:line 794
at ProtoBuf.Meta.TypeModel.GetKey(Type& type) in C:\code\protobuf-net\src\protobuf-net\Meta\TypeModel.cs:line 1281
at ProtoBuf.Meta.TypeModel.SerializeCore(ProtoWriter writer, Object value) in C:\code\protobuf-net\src\protobuf-net\Meta\TypeModel.cs:line 192
at ProtoBuf.Meta.TypeModel.Serialize(Stream dest, Object value, SerializationContext context) in C:\code\protobuf-net\src\protobuf-net\Meta\TypeModel.cs:line 228
at ProtoBuf.Serializer.Serialize[T](Stream destination, T instance) in C:\code\protobuf-net\src\protobuf-net\Serializer.cs:line 106
I have tried adding ProtoMap(DisableMap = true) but that did not help either.
Is there anything I need to do in the new version to get this to work?
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