将 C# 对象映射到 BsonDocument

Question

我对 MongoDB 比较陌生。我有一个具有以下定义的对象

[BsonDiscriminator("user")]
public Class BrdUser
{
    [BsonId(IdGenerator = typeof(StringObjectIdGenerator))]
    public string ID { get; set; }

    [BsonElement("username")]
    public string UserNm { get; set; }

    [BsonElement("email")]
    public string EmailAdrs { get; set; }
    .
    .
    .
    public IList<Question> Questions{ get; set; } //<-- Un sure as to what Bson type should this be
}

Questions 是另一个 BsonDocument 定义为：

[BsonDiscriminator("userques")]
public class Question
{
    [BsonId(IdGenerator = typeof(StringObjectIdGenerator))]
    public string ID { get; set; }

    [BsonElement("title")]
    public string Title{ get; set; }

    [BsonElement("desc")]
    public string Desciption{ get; set; }
}

我的问题是在映射时，我应该使用什么属性以便用户对象与问题对象反序列化。 C#驱动中没有[BsonDocument]属性。

Answer 1

我不确定你在哪里卡住了，但试试：

var brdDoc = new BrdUser ();
brdDoc.UserNm = "invisible";
brdDoc.EmailAdrs = "someone@womewhere.com";
brdDoc.Questions = new []{ new Question{ Title = "Q", Desciption = "Question to ask" } };

var bsonDocument = brdDoc.ToBsonDocument ();
var jsonDocument = bsonDocument.ToJson ();

Console.WriteLine (jsonDocument);

它将打印：

{ 
   "_id" : null, 
   "username" : "invisible", 
   "email" : "someone@womewhere.com", 
   "Questions" : [{ "_id" : null, "title" : "Q", "desc" : "Question to ask" }] 
}