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MongoDB C# Driver

Data Access
github.com/mongodb/mongo-csharp-driver

The Official C# .NET Driver for MongoDB

csharpcsharp-librarydotnet-frameworkmongodbnosql
GitHub stars
3,245
Forks
1,270
Open issues
22
NuGet downloads
442,849,362
latest 3.13.0
License
Apache-2.0
Language
C#
Last push
today
24 Oct 2026
Created
2 Jun 2010

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.