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MongoDB Language Series

MongoDB: The modern data platform for C#

Get the versatility and flexibility of MongoDB Atlas with the familiarity of C#. Accelerate development with a first-class developer experience.

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Write strongly-typed queries natively

Construct queries using idiomatic builders — no need to learn a new query language. MongoDB supports LINQ operators, so you can get the data you need with the syntax you know.

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Manipulate data using the tools of your choice

Easily work with your data using extensions for VS Code and Visual Studio. Browse your databases, prototype queries, and aggregations with dynamic playgrounds, and query data directly from your IDE.

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Build C# apps for native platforms using the Atlas Device SDK for .NET

Build scalable, high-performing mobile apps and games on MAUI and Unity with the Atlas Device .NET SDK. Streamline development with built-in data sync, automate app logic with Atlas Device Sync, and more.

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Unlock the full power of MongoDB directly within your EF Core projects

Enhance development with the MongoDB Provider for Entity Framework Core. Build modern, scalable applications using familiar APIs and avoid cloud vendor lock-in.

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MongoDB Atlas
and C# in action

Learn how you can deploy key MongoDB Atlas features — from aggregation pipelines to data encryption — using C# syntax. Helpful code snippets are included for easy copy and paste.

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Use the officially supported MongoDB C# driver to connect to your MongoDB Atlas cluster and start querying data instantly.

MongoDB C# Driver

Use the officially supported MongoDB C# driver to connect to your MongoDB Atlas cluster and start querying data instantly.

MongoDB C# Driver

Database.cs

Code Snippet

Transform and process your data with MongoDB’s modular, multi-stage aggregation framework. Easily customize and configure your data analysis using familiar LINQ expressions and syntax.

LINQ

Code Snippet

Add an extra layer of security with client-side field level encryption (CSFLE). Enable CSFLE on the MongoClient and encrypt fields with a JSON schema so sensitive data is never transmitted unencrypted nor seen unencrypted by the MongoDB server.

JsonSchemaCreator.cs

EncryptedClient.cs

Code Snippet

using MongoDB.Bson;

public static class JsonSchemaCreator
{
    private static readonly string DETERMINISTIC_ENCRYPTION_TYPE = "AEAD_AES_256_CBC_HMAC_SHA_512-Deterministic";

public static BsonDocument CreateJsonSchema(string keyId)
    {
        return new BsonDocument
        {
            { "bsonType", "object" },
            { "encryptMetadata", CreateEncryptMetadata(keyId) },
            {
                "properties",
                new BsonDocument
                {
                    {  
                        "ssn",
                        new BsonDocument
                        {
                            {
                                "encrypt",
                                new BsonDocument
                                {
                                    { "bsonType", "int" },
                                    { "algorithm", DETERMINISTIC_ENCRYPTION_TYPE }
                                }
                            }
                        }
                    }
                }
            }
        };
    }
}

Database.cs

Code Snippet

Boost Developer Productivity with the MongoDB Analyzer for .NET

The MongoDB Analyzer for .NET improves productivity for C# developers by reducing the pain of debugging queries. It quickly identifies when unsupported Builders or LINQ expressions are being used in your applications, enabling you to identify and fix any errors prior to runtime.

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