C# MongoDB complex class serialization

Question

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

{
    \"name\" : \"value\",
    \"age\": 1,
    \"isFemale\": true,
          


        

Answer 1

Found how to save the data to MongoDB here: Dictionary-to-BsonDocument conversion omitting _t field and extended it a bit so I thought to share the full solution.

Step #1:

In my class, I declared 2 members for each value:

// For the Hobbies object type:
[BsonIgnore] //ignore this value in MongoDB
public Dictionary Hobbies { get; set; }

[JsonIgnore] //ignore this value in the response on Get requests
[BsonElement(elementName: "Hobbies")]
public BsonDocument HobbiesBson { get; set; }

/*********************************************************************/

// For the Collection object type:
[BsonIgnore] //ignore this value in MongoDB
public List> Collection { get; set; }

[JsonIgnore] //ignore this value in the response on Get requests
[BsonElement(elementName: "Collection")]
public BsonArray CollectionBson { get; set; }

Step #2

In my WebAPI controller method for Post

[HttpPost]
public override async Task Post([FromBody] Person person)
{
    var jsonDoc = JsonConvert.SerializeObject(person.Hobbies);
    person.HobbiesBson = BsonSerializer.Deserialize(jsonDoc);

    jsonDoc = JsonConvert.SerializeObject(person.Collection);
    person.CollectionBson = BsonSerializer.Deserialize(jsonDoc);

    //save
}

Step #3

In my Get request I deserialize it back like this:

[HttpGet("{id?}")]
public override async Task Get(string id = null)
{
    var people = //get data from mongoDB
    foreach (var person in people)
    {
        var bsonDoc = BsonExtensionMethods.ToJson(person.HobbiesBson);
        person.Hobbies = JsonConvert.DeserializeObject>(bsonDoc);

        bsonDoc = BsonExtensionMethods.ToJson(person.CollectionBson);
        person.Collection = JsonConvert.DeserializeObject>>(bsonDoc);bsonDoc);
    }
    return Ok(people);
}

This solved my issue and I hope it can help others as well :-)