MongoDB.Bson 3.9.0

MongoDB C# Driver

MongoDB.Driver Documentation Documentation License

The official MongoDB .NET/C# driver.

The MongoDB .NET/C# driver follows semantic versioning since v3.0.0 of its releases.

Getting Started

Untyped Documents

using MongoDB.Bson;
using MongoDB.Driver;
var client = new MongoClient("mongodb://localhost:27017");
var database = client.GetDatabase("foo");
var collection = database.GetCollection<BsonDocument>("bar");

await collection.InsertOneAsync(new BsonDocument("Name", "Jack"));

var list = await collection.Find(new BsonDocument("Name", "Jack"))
    .ToListAsync();

foreach(var document in list)
{
    Console.WriteLine(document["Name"]);
}

Typed Documents

using MongoDB.Bson;
using MongoDB.Driver;
public class Person
{
    public ObjectId Id { get; set; }
    public string Name { get; set; }
}
var client = new MongoClient("mongodb://localhost:27017");
var database = client.GetDatabase("foo");
var collection = database.GetCollection<Person>("bar");

await collection.InsertOneAsync(new Person { Name = "Jack" });

var list = await collection.Find(x => x.Name == "Jack")
    .ToListAsync();

foreach(var person in list)
{
    Console.WriteLine(person.Name);
}

Documentation

Questions/Bug Reports

If you’ve identified a security vulnerability in a driver or any other MongoDB project, please report it according to the instructions here.

Contributing

Please see our guidelines for contributing to the driver.

Thank you to everyone who has contributed to this project.

Showing the top 20 packages that depend on MongoDB.Bson.

Packages Downloads
MongoDB.Driver.Core
Core Component of the Official MongoDB .NET Driver.
47
MongoDB.Driver
Official .NET driver for MongoDB.
46
MongoDB.Driver
Official .NET driver for MongoDB.
43
MongoDB.Driver
Official .NET driver for MongoDB.
40
MongoDB.Driver
Official .NET driver for MongoDB.
39
MongoDB.Driver
Official .NET driver for MongoDB.
37
MongoDB.Driver.GridFS
GridFS Component of the Official MongoDB .NET Driver.
37
MongoDB.Driver.Core
Core Component of the Official MongoDB .NET Driver.
36
MongoDB.Driver
Official .NET driver for MongoDB.
36
MongoDB.Driver.GridFS
GridFS Component of the Official MongoDB .NET Driver.
35
MongoDB.Driver.Core
Core Component of the Official MongoDB .NET Driver.
35
MongoDB.Driver
Official .NET driver for MongoDB.
35
MongoDB.Driver
Official .NET driver for MongoDB.
34

Version Downloads Last updated
3.9.0 10 05/29/2026
3.8.1 13 05/13/2026
3.8.0 28 04/23/2026
3.7.1 28 03/20/2026
3.7.0 27 03/04/2026
3.6.0 33 01/17/2026
3.5.2 29 12/11/2025
3.5.1 28 12/16/2025
3.5.0 24 12/20/2025
3.4.3 28 12/17/2025
3.4.2 34 12/18/2025
3.4.1 24 01/01/2026
3.4.0 22 12/12/2025
3.3.0 32 12/15/2025
3.2.1 27 12/11/2025
3.2.0 30 01/01/2026
3.1.0 30 12/13/2025
3.0.0 28 12/16/2025
2.30.0 26 12/25/2025
2.29.0 25 12/15/2025
2.28.0 21 12/12/2025
2.27.0 25 12/13/2025
2.26.0 27 12/12/2025
2.25.0 25 01/01/2026
2.24.0 23 12/16/2025
2.23.2 21 12/13/2025
2.23.1 21 01/01/2026
2.23.0 27 12/13/2025
2.22.0 24 12/16/2025
2.21.0 27 12/12/2025
2.20.0 18 12/13/2025
2.19.2 22 12/11/2025
2.19.1 27 12/15/2025
2.19.0 21 12/11/2025
2.18.0 17 01/01/2026
2.17.1 25 12/13/2025
2.17.0 25 12/14/2025
2.16.1 26 12/13/2025
2.16.0 21 12/13/2025
2.15.1 34 12/15/2025
2.15.0 26 12/12/2025
2.14.1 23 01/01/2026
2.14.0 20 12/13/2025
2.14.0-beta1 21 12/23/2025
2.13.3 28 12/12/2025
2.13.2 23 12/29/2025
2.13.1 30 12/28/2025
2.13.0 30 12/13/2025
2.13.0-beta1 23 01/01/2026
2.12.5 24 01/01/2026
2.12.4 28 12/24/2025
2.12.3 26 12/13/2025
2.12.2 26 01/01/2026
2.12.1 24 12/13/2025
2.12.0 32 12/13/2025
2.12.0-beta1 30 12/13/2025
2.11.6 29 12/12/2025
2.11.5 21 12/13/2025
2.11.4 22 12/15/2025
2.11.3 29 12/13/2025
2.11.2 23 01/01/2026
2.11.1 25 01/01/2026
2.11.0 24 12/13/2025
2.11.0-beta2 27 12/11/2025
2.11.0-beta1 21 12/18/2025
2.10.4 24 12/15/2025
2.10.3 24 12/20/2025
2.10.2 21 12/13/2025
2.10.1 24 12/27/2025
2.10.0 24 01/02/2026
2.10.0-beta1 23 12/11/2025
2.9.3 38 12/11/2025
2.9.2 31 12/13/2025
2.9.1 30 12/13/2025
2.9.0 22 12/12/2025
2.9.0-beta2 22 12/12/2025
2.9.0-beta1 29 12/13/2025
2.8.1 21 01/01/2026
2.8.0 28 12/22/2025
2.7.3 27 12/13/2025
2.7.2 24 12/13/2025
2.7.1 20 12/30/2025
2.7.0 27 12/24/2025
2.7.0-beta0001 19 12/28/2025
2.6.1 25 12/13/2025
2.6.0 25 01/01/2026
2.5.1 22 12/15/2025
2.5.0 35 12/13/2025
2.4.4 21 01/01/2026
2.4.3 26 01/01/2026
2.4.2 20 01/01/2026
2.4.1 25 12/13/2025
2.4.0 21 12/23/2025
2.4.0-beta1 23 12/14/2025
2.3.0 24 12/13/2025
2.3.0-rc1 27 12/13/2025
2.3.0-beta1 27 12/20/2025
2.2.4 26 12/13/2025
2.2.3 23 12/15/2025
2.2.2 24 12/13/2025
2.2.1 27 12/13/2025
2.2.0 23 12/13/2025
2.2.0-rc0 26 12/12/2025
2.1.1 26 12/13/2025
2.1.0 25 12/11/2025
2.1.0-rc1 29 12/13/2025
2.1.0-rc0 23 12/13/2025
2.0.2 19 01/01/2026
2.0.1 26 12/13/2025
2.0.0 28 12/18/2025
2.0.0-rc0 23 12/13/2025
2.0.0-beta4 26 12/16/2025
2.0.0-beta3 27 12/12/2025
2.0.0-beta2 26 12/24/2025
2.0.0-beta1 20 01/01/2026