14 practical guides

.NET Guides for Application Developers

Choose a guide for the part of the application you work on. For the current release, start with the .NET 11 overview, then follow the examples for your codebase.

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What's New in .NET 11?

.NET 11 ships with C# 15, LINQ FullJoin, and built-in Zstandard compression. See what you can use with just the SDK and when you need to retarget your app.

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Explore .NET

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Upgrade and deploy

Move a service from .NET 10, check its failure paths, and verify the image your pipeline produces.

  1. What's New in .NET 11?

    5 min read

  2. How to Upgrade an ASP.NET Core Service From .NET 10 to .NET 11

    5 min read

  3. .NET 11 Breaking Changes to Check in a Worker Service

    4 min read

  4. Reproducible Container Images With the .NET 11 SDK

    3 min read

Write, build, and test C#

Try the language changes, compare async implementations, and exercise the SDK with a test project and a command-line tool.

  1. Three C# 15 Features for Collections and Nested Loops

    3 min read

  2. How Runtime Async Changes async/await in .NET 11

    4 min read

  3. Build Part of a Solution and Limit Test Runs With the .NET 11 SDK

    3 min read

  4. How to Capture Process Output and Exit Codes in .NET 11

    4 min read

Query and exchange data

Compare snapshots, inspect EF Core queries, stream JSON records, and compress a finished export.

  1. LINQ FullJoin in .NET 11: Find Missing Rows on Both Sides

    5 min read

  2. What's New in EF Core 11? MaxBy, MinBy, and SQLite Migrations

    4 min read

  3. How to Stream JSON Lines With System.Text.Json in .NET 11

    3 min read

  4. Zstandard Compression in .NET 11: Read and Write .zst Files

    4 min read

Serve web requests

Cache part of a Blazor page or negotiate a compressed file transfer with an API client.

  1. Blazor CacheView in .NET 11: Cache Part of a Server-Rendered Page

    4 min read

  2. ASP.NET Core 11 Zstandard Compression for HTTP Requests and Responses

    3 min read