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C# MongoDB complex class serialization

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鱼传尺愫
鱼传尺愫 2020-12-30 15:45

I\'m working with C# MongoDB driver and I have this rather complex JSON struct to save:

{
    \"name\" : \"value\",
    \"age\": 1,
    \"isFemale\": true,
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  • 生来不讨喜
    生来不讨喜 (楼主)
    2020-12-30 16:15

    A simple way for dealing with this issue and not have to create additional properties, is registering a custom serializer.

    ComplexTypeSerializer.cs

    namespace MyNamespace.MongoDB.Serializers
{
    public class ComplexTypeSerializer : SerializerBase
    {
        public override object Deserialize(BsonDeserializationContext context, BsonDeserializationArgs args)
        {
            var serializer = BsonSerializer.LookupSerializer(typeof(BsonDocument));
            var document = serializer.Deserialize(context, args);

            var bsonDocument = document.ToBsonDocument();

            var result = BsonExtensionMethods.ToJson(bsonDocument);
            return JsonConvert.DeserializeObject>(result);
        }

        public override void Serialize(BsonSerializationContext context, BsonSerializationArgs args, object value)
        {
            var jsonDocument = JsonConvert.SerializeObject(value);
            var bsonDocument = BsonSerializer.Deserialize(jsonDocument);

            var serializer = BsonSerializer.LookupSerializer(typeof(BsonDocument));
            serializer.Serialize(context, bsonDocument.AsBsonValue);
        }
    }
}



    And register it as per http://mongodb.github.io/mongo-csharp-driver/2.3/reference/bson/serialization/
    


    BsonSerializer.RegisterSerializer(typeof(IDictionary), new ComplexTypeSerializer());

    


    or 
    


    BsonSerializer.RegisterSerializer(typeof(IList>), new ComplexTypeSerializer());

    


    The code below was tested with a simple IDictionary, not sure if it would work with IList>, however if it's not supported, you can create another custom serializer to support it.
    
    
    
             
    
                                                        
    
            
            
    
              
                
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