Convert MongoCursor to json?

[Alex]

hi ! everyone
i 'm use c# Driver codeing.
how to Convert MongoCursor<BsonDocument> type to json type?

[Robert Stam]

You can't convert a MongoCursor to JSON.

What you can do is read the documents returned by the MongoCursor one
by one and convert each document to JSON. Something like:

foreach (var document in cursor) {
var json = document.ToJson();
// do something with the json variable
}

Alternatively, if you want a single JSON array containing all the
documents returned by the cursor you could write:

var json = cursor.ToArray().ToJson();

Be careful calling this if the cursor returns many documents as it
will require large amounts of memory then.

[Laura Dietz]

It is an iterator, it is not a json document.

I think you want to fall forEach on it and so something with the returned objects
cursor.forEach(function(Elem){printjson(Elem);}


Maybe I misunderstood your question. If you want to get more info on the current state of the cursor, the documentation says this:

"Auditing allocated cursors

Information on allocated cursors may be obtained using the {cursorInfo:1} command.

db.runCommand({cursorInfo:1})"
http://www.mongodb.org/display/DOCS/Queries+and+Cursors#QueriesandCursors-ClosingandTimeouts


Laura