I'm using ToBsonDocument
extension method from MongoDB.Bson
to convert this Dictionary:
var dictionary = new Dictionary<string, object> {{"person", new Dictionary<string, object> {{"name", "John"}}}};
var document = dictionary.ToBsonDocument();
And here's the resulting document:
{ "person" :
{ "_t" : "System.Collections.Generic.Dictionary`2[System.String,System.Object]",
"_v" : { "name" : "John" } } }
Is there a way to get rid of these _t/_v stuff? I would like the resulting document to look like this:
{ "person" : { "name" : "John" } }
UPD: I've found the code in DictionaryGenericSerializer:
if (nominalType == typeof(object))
{
var actualType = value.GetType();
bsonWriter.WriteStartDocument();
bsonWriter.WriteString("_t", TypeNameDiscriminator.GetDiscriminator(actualType));
bsonWriter.WriteName("_v");
Serialize(bsonWriter, actualType, value, options); // recursive call replacing nominalType with actualType
bsonWriter.WriteEndDocument();
return;
}
So, it seems that there are not too many options with this serializer when the value type is object
.
You shall first serialize to JSON and then to BSON,
var jsonDoc = Newtonsoft.Json.JsonConvert.SerializeObject(dictionary);
var bsonDoc = MongoDB.Bson.Serialization.BsonSerializer.Deserialize<BsonDocument>(jsonDoc);