.NET Blog

10 stories

.NET BlogLanguagesGet Your .NET MAUI App Ready for Xcode 27 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.

10.19

.NET BlogLanguagesBring Your Own Model to the GitHub Copilot SDK with C# 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.

10.19

.NET BlogLanguagesIntroducing dotnetup: A toolchain manager for .NET Getting started with .NET on macOS and Linux has historically meant navigating a plethora of options: system package managers like apt or brew , platform-specific tarballs, or standalone shell…

10.15

.NET BlogLanguagesAnnouncing .NET 11 Release Candidate 2 .NET 11 Release Candidate 2 is now available. This is our second release candidate, which comes with a go-live support license so you can confidently use this release for your production…

10.13

.NET BlogLanguages.NET and .NET Framework October 2026 servicing releases updates Welcome to our combined .NET servicing updates for October 2026. Let’s get into the latest release of .NET and .NET Framework.

10.12

.NET BlogLanguagesDurable Task in the Real World: What Problems Does It Actually Solve? Five practical examples of when durable execution makes sense, when it doesn’t, and what it means for AI agents.

10.12

.NET BlogLanguagesA faster, lighter C# Dev Kit We developers know just how fast computers can be, and we want to feel that speed in our tools. Waiting for language support to load, builds to complete and tests to run is time we could better spend…

10.06

.NET BlogLanguagesUWP and WinUI 3 apps: UI testing with MSTest Reliable testing of UWP and WinUI 3 apps needs the app’s real UI dispatcher, not just a single-threaded apartment (STA) thread, so that test setup, async test code, and cleanup all run with UI-thread…

10.05

.NET BlogLanguagesBuild Agentic UI with the new Blazor AI components 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.

09.28

.NET BlogLanguagesAG-UI Protocol now has a first-class .NET SDK The .NET team is pleased to announce that we’ve contributed a .NET SDK for AG-UI in collaboration with CopilotKit .

09.25

The name is the button.

An agent writes the code now, and a human thumb hovers over Accept all a hundred times a day. The honest question of this decade is what, exactly, you just accepted. So I read the diff.

Eight years as a backend engineer in Stockholm, back in Tokyo since 2023, and I still ship something small most nights, usually badly. My one rule: the only real review of a model is the thing you built with it. That is why there is no leaderboard on this site.

Around a hundred and forty sources come through — the labs' own posts, the papers, the tools, the runtimes and languages nobody is watching yet, the chip under the demo, and the newsletters people actually forward. What is moving gets counted so the week reads at a glance, and every few days I explain one mechanism in plain words.

A story here is a headline, a short excerpt, one image and the link to whoever wrote it. We never reproduce the post; the images belong to their authors. A post written in Japanese appears in Japanese, exactly as it was published, and the link goes to the original.

— Yuki Halvorsen, Tokyo