How to view nested document in MongoDB collection (MongoDB C# Driver)?

Question

NoSQL

Good afternoon, I'm interested in the question of how it is possible to view the contents of nested documents in collections using the MongoDB C# Driver.
There is a collection of something like this:

{
 "_id" : ObjectId("5387548bd77a951d4006decd"),
 "AccountNr" : 123,
 "FirstName" : "Martin",
 "LastName"  : "Marley",
 "Address"   : {
                "Zip" : 40789
               }
}

And, there are classes describing it:

public class Address
{
    [BsonElementAttribute("Zip")]
    public int Zip       { get; set; }

    [BsonElementAttribute("City")]
    public string City   { get; set; }

    [BsonElementAttribute("Street")]
    public string Street { get; set; }

    [BsonElementAttribute("HomeNr")]
    public int HomeNr { get; set; }
}

public class Client
{
    [BsonId]
    public ObjectId _id { get; set; }

    [BsonElementAttribute("AccountNr")]
    public int AccountNr { get; set; }

    [BsonElementAttribute("FirstName")]
    public string FirstName { get; set; }

    [BsonElementAttribute("LastName")]
    public string LastName { get; set; }

    [BsonElementAttribute("Address")]
    public Address address { get; set; }

    [BsonConstructor]
    public Client()
    {
        address = new Address();
    }

}

There is a method that inserts documents into a collection:

public void InsertCustomer(Client client )
    {
        MongoCollection<Client> document = myDatabase.GetCollection<Client>("Client");
        BsonDocument Client = new BsonDocument
        {
            {"AccountNr",client.AccountNr},
            {"FirstName",client.FirstName},
            {"LastName",client.LastName},
            {"Address", new BsonDocument{{"Zip",client.address.Zip}}}

        };
        document.Insert(Client);
    }

There is also a method that allows you to view the contents of the collection:

public List<Client> ViewAllClientsList()
{
    var collection = myDatabase.GetCollection<Client>("Client");
    MongoCursor<Client> clientResults = collection.FindAllAs<Client>();
    List<Client> allClients = clientResults.ToList<Client>();
    MessageBox.Show(allClients.ToJson().ToString());
    return allClients;
}

In the MessageBox, the collection is displayed in its entirety, as it is:

And, in the Datagridview, when I bind to allClients, I get the following output:

How can I achieve to display the data from the nested document?