Dr. Holger Schwichtenberg

Softwarearchitekt, Berater, Trainer, Konferenzsprecher, Buchautor @ .NET und Web

[Dr. Holger Schwichtenberg @DOTNETDOKTOR]

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

[Dr. Holger Schwichtenberg @DOTNETDOKTOR]

.NET Blog: .NET October 2026 Out-of-Band Security Updates https://t.co/I6VXSeniuG
Today, we are releasing out-of-band (OOB) security updates for .NET 8, .NET 9, and .NET 10, along with .NET 11 Release Candidate 3. We recommend updating as soon as possible.

Security updates

T…

[Dr. Holger Schwichtenberg @DOTNETDOKTOR]

Visual Studio Blog: Are You Getting Everything You Can from Your Visual Studio Subscription? https://t.co/WACYUQ3k9E

What if you could experiment with a new Azure service without requesting additional budget, prepare for your next technical certification using learning resour…

[Dr. Holger Schwichtenberg @DOTNETDOKTOR]

Visual Studio Blog: Compare today’s code with an earlier commit https://t.co/OM9NvR7zVa
You know a change was present in an earlier commit, and you want to see how the code in front of you differs now. Comparing two commits answers part of that question, but it leaves out work…

[Dr. Holger Schwichtenberg @DOTNETDOKTOR]

.NET Blog: Get Your .NET MAUI App Ready for Xcode 27 https://t.co/yfnIjSzA8e
Your existing .NET MAUI app builds with Xcode 27, installs on an iPhone running iOS 27, shows its splash screen, and then disappears. Not exactly the grand entrance you were hoping for.

That symptom …

[Dr. Holger Schwichtenberg @DOTNETDOKTOR]

.NET Blog: Bring Your Own Model to the GitHub Copilot SDK with C# https://t.co/5xjdkNO4GA
Hi,

I know, I keep coming back to the same theme on this blog: agent harnesses. In Build Your Own AI Agent Harness in C# we built one from scratch. In From dotnet run to Foundry Hosted A…

[Dr. Holger Schwichtenberg @DOTNETDOKTOR]

Visual Studio Blog: Organize and revisit tabs with the keyboard https://t.co/evPVQhsfor
When you’re moving between an implementation, its tests, and a related interface, the order of your open tabs can become a useful part of the task. But arranging that order and returning to…

[Dr. Holger Schwichtenberg @DOTNETDOKTOR]

.NET 11.0 Release Candidate 2: Ein paar neue Features und ein paar Breaking Changes kurz vor Fertigstellung
https://t.co/LrRmPiPCLw

@dotnet #Dotnet

[Dr. Holger Schwichtenberg @DOTNETDOKTOR]

Visual Studio Blog: Visual Studio September Update – Power Your Workflow with Your Model https://t.co/aoRr0mdnkv
The best LLM in Visual Studio is the one you choose. This month’s update puts that idea front and center: pick the model that fits how you work, then use it everywh…

[Dr. Holger Schwichtenberg @DOTNETDOKTOR]

Umfrage in der Keynote der @BASTAcon zur KI-Nutzung #bastacon

[Dr. Holger Schwichtenberg @DOTNETDOKTOR]

Die Herbst-@BASTAcon 2026 beginnt jetzt in Mainz. Volles Haus! #bastacon

[Dr. Holger Schwichtenberg @DOTNETDOKTOR]

.NET Blog: Build Agentic UI with the new Blazor AI components https://t.co/R8uXW2npE6
AI enables natural and powerful ways for people to interact with software through language, voice, and vision. Applications with agents go further by helping users accomplish work. Agents can…

[Dr. Holger Schwichtenberg @DOTNETDOKTOR]

.NET Blog: AG-UI Protocol now has a first-class .NET SDK https://t.co/xXeVJiD1Oy
The .NET team is pleased to announce that we’ve contributed a .NET SDK for AG-UI in collaboration with CopilotKit. The AG-UI .NET SDK lives in the AG-UI repository alongside the TypeScript and Pyt…

[Dr. Holger Schwichtenberg @DOTNETDOKTOR]

.NET Blog: Microsoft is updating its author-signing certificate starting September 23, 2026 https://t.co/vXS8VLkzwO
Action required: If you validate that packages are author-signed by Microsoft using a NuGet client policy or the dotnet nuget verify command, follow the steps in…

[Dr. Holger Schwichtenberg @DOTNETDOKTOR]

Visual Studio Blog: Today I will… debug a production crash https://t.co/7ZtMijgCYL
We’ve all experienced this, the desktop application is hanging, the window is greyed out, and we’re just waiting for it to start to respond. Or we’re on a website and are sure that it was going…

[Dr. Holger Schwichtenberg @DOTNETDOKTOR]

.NET Blog: Creating a memory dump in C# https://t.co/gtxs8S5bOY
When applications crash in production, how much do we actually know about what happened? And more importantly, how easy is it to debug what happened so that we can fix the bug? Let’s learn how easy it is to captur…

[Dr. Holger Schwichtenberg @DOTNETDOKTOR]

.NET Blog: Build Your Own AI Agent Harness in C#, the MafClaw Live Series https://t.co/QPLclpZLXf
A few weeks ago I wrote about going from dotnet run to a Foundry Hosted Agent in three lines of C#. The feedback was great. Developers liked the deployment story, the managed infr…

[Dr. Holger Schwichtenberg @DOTNETDOKTOR]

Visual Studio Blog: AI Is Changing How We Code. It’s Also Changing How We Learn.  https://t.co/XGkiL7sAGL

AI is changing software development at a pace no one can ignore. 

Developers now have powerful AI tools that can help us write code, understand unfamiliar codebases, tro…

[Dr. Holger Schwichtenberg @DOTNETDOKTOR]

Visual Studio Blog: Today I will… improve test coverage https://t.co/rqZQ7AnnuZ
Today I want to look at how we can improve on the test coverage that we have in the Interview Coach application. This application has some unit tests in it already, but I’m sure there is room for …

[Dr. Holger Schwichtenberg @DOTNETDOKTOR]

.NET Blog: Share your .NET story with the community https://t.co/9JcKdP7HhT
The best way to understand what .NET makes possible is to see what teams are
building with it.

At .NET Conf 2026, we want to share more
stories from people and organizations using .NET to solve real p…

[Dr. Holger Schwichtenberg @DOTNETDOKTOR]

Fachveröffentlichung: Neues für Zahlen, Unicode und Komprimierung in .NET 11.0 Preview 1 bis 5 https://t.co/yTQU6CrMW0 Zwischen Februar und Juni 2026 sind die Preview-Versionen 1 bis 5 von .NET 11.0 erschienen. Microsoft liefert darin Neuerungen für Zufalls(zahlen), Unicode-Zei…