.NET Blog: Instructions Hygiene – What Frontier Models Still Need You to Say https://t.co/IC4xVhI6XR Instructions files have a habit of growing in only one direction. A model makes a mistake, so somebody adds a rule. A tool changes, so somebody adds a workaround. A new model …

— Dr. Holger Schwichtenberg (@DOTNETDOKTOR) Aug 12, 2026

X.com, 12.08.2026

.NET Blog: .NET 11 Preview 7 is now available! https://t.co/LZJIYi5fGf Today, we are excited to announce the seventh preview release of .NET 11! This release includes improvements across libraries, the .NET Runtime, SDK, C#, https://t.co/H2pTCh2keY Core, .NET MAUI, Entity Fram…

— Dr. Holger Schwichtenberg (@DOTNETDOKTOR) Aug 11, 2026

X.com, 11.08.2026

.NET Blog: .NET and .NET Framework August 2026 servicing releases updates https://t.co/hqspXDBbQU Welcome to our combined .NET servicing updates for August 2026. Let’s get into the latest release of .NET and .NET Framework. Here’s a quick overview of what’s new in our servicin…

— Dr. Holger Schwichtenberg (@DOTNETDOKTOR) Aug 11, 2026

X.com, 11.08.2026

Visual Studio Blog: Today I will… manage Git Submodules without leaving the IDE https://t.co/tC99Pczb1g If you’ve worked with Git submodules for any length of time, you probably have a love-hate relationship with them. They’re genuinely useful for pulling a shared library, an…

— Dr. Holger Schwichtenberg (@DOTNETDOKTOR) Aug 11, 2026

X.com, 11.08.2026

Fachveröffentlichung: Union Types in C# 15.0 https://t.co/WJ7oCa6e5j In der fünfzehnten Version von C# gibt es endlich die lang ersehnten Discriminated Unions in Form von Union Types. Damit kann ein Datentyp genau einen von mehreren definierten Typen enthalten, ohne dass diese …

— Dr. Holger Schwichtenberg (@DOTNETDOKTOR) Aug 11, 2026

X.com, 11.08.2026

.NET Blog: Test reporting in Microsoft.Testing.Platform: from red build to root cause https://t.co/He1RtkLfKg When a test fails in CI, “the build is red” is only the starting point. The useful questions are whether this change caused the failure, whether the test has failed be…

— Dr. Holger Schwichtenberg (@DOTNETDOKTOR) Aug 6, 2026

X.com, 06.08.2026

.NET Blog: Beyond Chat: live Speech-to-Text with Foundry Local and C# https://t.co/9xqqnhzyWe A year ago, I wrote a .NET Blog post about running GPT-OSS locally with Ollama and C#. That sample used IChatClient from https://t.co/wMaMtW2RuF to build one of the most familiar Loca…

— Dr. Holger Schwichtenberg (@DOTNETDOKTOR) Aug 4, 2026

X.com, 04.08.2026

Visual Studio Blog: Build Azure Skills Faster with Cloud Academy, a Visual Studio Subscriber Benefit https://t.co/GFJgQ9yXw7 If you’ve been looking for a practical way to build Azure skills, Cloud Academy (a QA company) gives Visual Studio subscribers hands-on learning that f…

— Dr. Holger Schwichtenberg (@DOTNETDOKTOR) Aug 4, 2026

X.com, 04.08.2026

.NET Blog: Strengthening NuGet Supply Chain Security: Reducing API Key Lifetime https://t.co/vudptgD5qG Many developers publish packages to https://t.co/9SmSHlxtI5 via API keys. In recent years, API keys and Personal Access Tokens (PATs) have been frequently used as an attack …

— Dr. Holger Schwichtenberg (@DOTNETDOKTOR) Aug 3, 2026

X.com, 03.08.2026

.NET Blog: From generated code to trusted code with a unit-test agent https://t.co/2ZfA68xkPj A common request to a coding agent is only one line: Generate unit tests. That request leaves important questions open. Which code needs tests? Which test framework does the project…

— Dr. Holger Schwichtenberg (@DOTNETDOKTOR) Jul 31, 2026

X.com, 31.07.2026

Visual Studio Blog: Tell your model when to think harder  https://t.co/87Fe3zTpCe Not every question deserves the same amount of thought. Renaming a variable isn’t the same as debugging a memory leak, and they don’t need the same level of thinking. So why should your model tre…

— Dr. Holger Schwichtenberg (@DOTNETDOKTOR) Jul 29, 2026

X.com, 29.07.2026

.NET Blog: Announcing v2.0 of the official MCP C# SDK https://t.co/5b3N7xKA6d The Model Context Protocol (MCP) C# SDK has reached v2.0, implementing the 2026-07-28 revision of the MCP specification. It’s the largest revision of the protocol since it launched. This release is …

— Dr. Holger Schwichtenberg (@DOTNETDOKTOR) Jul 28, 2026

X.com, 29.07.2026

Visual Studio Blog: Visual Studio July Update — Meet the New Agent, Powered by the GitHub Copilot SDK https://t.co/asgTJVZ4kP The best AI assistance is the kind you can steer, understand, and rely on. The July update is built around all three. There’s a new Agent (Preview) in …

— Dr. Holger Schwichtenberg (@DOTNETDOKTOR) Jul 28, 2026

X.com, 28.07.2026

.NET Blog: Analyze MSBuild Binary Logs with Copilot in VS Code https://t.co/KGS1AgmEPU You know the moment. CI goes red, or a build that took 8 seconds yesterday now takes 40, and you’re staring at a wall of MSBuild output trying to find the one line that matters. The answer i…

— Dr. Holger Schwichtenberg (@DOTNETDOKTOR) Jul 27, 2026

X.com, 27.07.2026

Fachveröffentlichung: .NET 11.0 Update (Kindle) https://t.co/oUO6iYyeQ0 Dieses kompakte .NET 11.0-Buch ist DAS Umsteigerbuch für Entwicklerinnen und Entwickler, die bisher mit .NET 10.0 gearbeitet haben. Es zeigt systematisch und anhand von vielen praktischen Programmcodebeispi…

— Dr. Holger Schwichtenberg (@DOTNETDOKTOR) Jul 19, 2026

X.com, 19.07.2026

Fachveröffentlichung: .NET 11.0 Update (Druck) https://t.co/3Of8qfQw2b Dieses kompakte .NET 11.0-Buch ist DAS Umsteigerbuch für Entwicklerinnen und Entwickler, die bisher mit .NET 10.0 gearbeitet haben. Es zeigt systematisch und anhand von vielen praktischen Programmcodebeispie…

— Dr. Holger Schwichtenberg (@DOTNETDOKTOR) Jul 19, 2026

X.com, 19.07.2026

Mein Update ".NET 11.0 Update" (Stand Preview 6). Jetzt auch verfügbar bei Amazon (Druck + Kindle): https://t.co/3tSLDrPtFU Oder als PDF: https://t.co/vJ4Uw75nm9 #dotnet @dotnet #net11 #dotnet11 https://t.co/9upmaCCIDM

— Dr. Holger Schwichtenberg (@DOTNETDOKTOR) Jul 19, 2026

X.com, 19.07.2026

.NET Blog: Announcing .NET Modernization for Beginners https://t.co/cSDKycMJ4m We’ve built a new course to help you navigate the journey when you’re the owner of an application built on a legacy .NET framework and it needs to be modernized. The whole concept of modernization i…

— Dr. Holger Schwichtenberg (@DOTNETDOKTOR) Jul 16, 2026

X.com, 16.07.2026

Fachveröffentlichung: .NET 11.0 Preview 6: Union Types machen sich in den .NET-Bibliotheken breit https://t.co/n296rmv2AP Neben mehr Einsatzgebieten für Discriminated Unions bietet die Preview weitere Möglichkeiten zur asynchronen Validierung und Neues für die Prozessverwaltung.

— Dr. Holger Schwichtenberg (@DOTNETDOKTOR) Jul 16, 2026

X.com, 16.07.2026

Visual Studio Blog: Visual Studio Administrator? Join our Private Marketplace Preview! https://t.co/KfZJ8ol9yC Organizations are increasingly looking for greater control over extensions within development environments. Driven by security, compliance, and internal governance re…

— Dr. Holger Schwichtenberg (@DOTNETDOKTOR) Jul 16, 2026

X.com, 16.07.2026