Increase a field value in mongodb c sharp From http://stackoverflow.com/questions/10566602/how-do-you-increment-a-field-in-mongodb-using-c-sharp

Increase a field value in mongodb c sharp

        var query = Query.And(Query.EQ("_id", keyName));
        var sortBy = SortBy.Null;
        var update = Update.Inc("KeyValue", adjustmentAmount);
        var result = collection.FindAndModify(query, sortBy, update, true);