删除子文档mongodb C＃的问题

Question

I'm trying to remove subdocument called "Data", but my code didn't work

var update = Update.Pull("Meta.$.Data", new BsonDocument(){
                { } // I dont know what I should write in BsonDocument
            });

Here's an example of document

        "_id" : 2,
        "RefId" : null,
        "RefIdStr" : "32",
        "Meta" : {
            "DatabaseRouting" : "{replicaSetName:company}",
            "Data" : "{id:1,name:Centrum ,phoneNumber:,nip:76"

        }

Answer 1

我解决了问题$ unset帮助我：

Database.GetCollection(Users).Update(query, Update.Unset("Meta.Data"));