mongodb 更新数组

IMongoQuery query = Query.EQ("_id", new ObjectId(bsonAuthor.AuthorAuid));
            BsonElement id = new BsonElement("id", "1");
            BsonElement name = new BsonElement("name", "beijin");
            BsonDocument bson = new BsonDocument(id, name);
            IMongoUpdate update = Update.AddToSet("organization", bson);
            bool b = GetCollection().Update(query, update).Ok;
            return b;

更新完得到的结果

"organization" : [ { "id" : "1", "name" : "beijin" } ] }