MongoDB .Net driver 2.0 Pull (remove element)

by

When using a filter to remove array elements, you need to use the PullFilter builder instead of Pull (which matches whole elements).

var collection = db.GetCollection<Person>("people");
var filter = new BsonDocument("username", "bodrum");
var update = Builders<Person>.Update.PullFilter("followerList",
    Builders<Follower>.Filter.Eq("follower", "fethiye"));
var result = collection.FindOneAndUpdateAsync(filter, update).Result;

Or somewhat more succinctly, using lambdas:

var update = Builders<Person>.Update.PullFilter(p => p.followerList,
                                                f => f.follower == "fethiye");
var result = collection
    .FindOneAndUpdateAsync(p => p.username == "bodrum", update).Result;

More Related Contents:

  1. Mongodb query equivalent of the following SQL query
  2. MongoDB GridFs with C#, how to store files such as images?
  3. Aggregate $lookup with C#
  4. Is there an “Explain Query” for MongoDB Linq?
  5. MongoDB and C#: Case insensitive search
  6. MongoDB C# Driver 2.0 – Update document
  7. Get _id of an inserted document in MongoDB?
  8. BsonSerializationException when serializing a Dictionary to BSON
  9. In sqlite I would do, But how in mongodb c#
  10. A timeout occured after 30000ms selecting a server using CompositeServerSelector
  11. How to use decimal type in MongoDB
  12. JSON.NET cast error when serializing Mongo ObjectId
  13. How many clients can connect to this server? [closed]
  14. How can i get ALL File Extentions in C#? [closed]
  15. Is floating-point math consistent in C#? Can it be?
  16. How to write a simple Html.DropDownListFor()?
  17. c# Image resizing to different size while preserving aspect ratio
  18. Image sequence to video stream?
  19. How do I get information about recently connected USB device?
  20. How to read to end process output asynchronously in C#?
  21. How do I make Chrome Headless after I login manually
  22. C# using others code
  23. Selectively coloring text in RichTextBox
  24. What happens if I don’t call Dispose on the pen object?
  25. How to serialize static or const member variables using JSON.NET?
  26. File-size format provider
  27. Using DI container in unit tests
  28. Can someone distill into proper English what a delegate is?
  29. Binding to custom control inside DataTemplate for ItemsControl
  30. Access to the path denied error in C#

Leave a Comment