vb.net至c＃.net mongodb按日期排序

Question

I'm trying to get a small snippet of code from vb.net to c#.net using mongoDB driver working. It's almost working, but I can't seem to get the doc out of the mongoCursor in the same way I do from vb.net.

vb.net code:

        Dim latest = updateCollection.FindAll.SetSortOrder(SortBy.Descending("date")).SetLimit(1)
        Dim latestDoc As BsonDocument = latest(0)

c#.net code:

        var updateCollection = database.GetCollection<BsonDocument>("updateInfo");
        var sortby = SortBy.Descending("date");
        var latest = (updateCollection.FindAll().SetSortOrder(sortby).SetLimit(1));
        var latestDoc = latest.ToBsonDocument();

I've tried something like

        var latestDoc = latest[0];

as well, but it hasn't worked. What am I missing?

Thank you!

Answer 1

You're getting a MongoCursor, not an item back from that that method, so you'll want to do something like this:

//add at the top of your code file
using System.Linq;


//...
//get the first result from the cursor like this:
var latestDoc = latest.FirstOrDefault();