Creating lazy properties with .NET10 #dotnet #csharp blog.ladeak.net/posts/lazy-p...

New article: Which of these languages are best for AI? blog.ploeh.dk/2026/03/09/w...

And last but not least, I have promoted Markdig to 1.0 🎉 This project has been around for 10 years and to celebrate this, the project has now a proper website with its documentation https://xoofx.github.io/markdig/ 🤩

@anthonychu.ca I am exploring container apps, and I'd like to setup a self-signed cert between the ingress and application (for HTTP/2). I have provided the certs for the app, and set insecure on the ingress. But I get this error: "upstream connect error or disconnect/reset before headers..."

Runtime Async support in .NET 11 Preview 1!

Blogged: Creating and consuming metrics with System.Diagnostics.Metrics APIs andrewlock.net/creating-and... In this post I provide an introduction to the System.Diagnostics.Metrics API, show how to create a custom metric, and show how to read it with dotnet-counters #dotnet

I am testing DependentHandle type in #dotnet blog.ladeak.net/posts/depend...

Am I the only one not super excited about unions in c#?

I installed today python. I was surprised by its performance (compared to .net) and then deleted it. Repeated this once more.

Merry Christmas! 🎄 If you’re visiting family today, remember to turn off motion smoothing on their TV 👍

@erikej.bsky.social not sure if you have come across this one already: github.com/dotnet/efcor...

@captainsafia.com and @damianedwards.com - this year it was said that controller actions will no longer be the main way to structure endpoints; minimal apis are in focus. I didn't hear this message on .NET Conf. What is current suggestion? For an app with hundreds of endpoints? Start migration?

#dotnetconf how do Aspire commands work when the app is deployed? Would it still allow to execute any executable?

@anthonychu.ca What is the downside of hosting a simple aspnet core app in an Azure Functions (with the customHandler in the host.json) instead of container apps or app service? Is it any cheaper?

How does vectorized code's performance compare on x64 vs arm64 CPU? #dotnetconf

#dotnetconf Does code inlining help with escape analysis for object stack allocation? Should I proactively add AggressiveInlining or NoInlining to achieve better object stack allocation?

#dotnetconf and #dotnetconf2025 in ASP.NET Core the focus seems to be on minimal APIs, what is the future of controller based APIs? Shall I start migrating existing applications to use minimal APIs? Are there any agents that could help with the task?

#dotnetconf in ASP.NET Core passkeys only work with Identity, or it works with 3rd party auth providers? (e.g. an internal identity provider).

Turning off System.HexConverter.ToString allocations in ASP.NET Core #dotnet blog.ladeak.net/posts/aspnet...

1/2 Many interview dev candidates when asking about the projcts's tech stack suggest/ask about refactoring the app to cqrs, clean architecture etc. without knowing anything about the codebase or the features. It is not even an architecture role. Be humble to the existing code.

My dotnet-dump cheat sheet #dotnet blog.ladeak.net/posts/diagno...

Describe enterprise codebase with a single word: IMyEnterpriseEntityResolverFactoryProvider

Tomorrow is 3²/4²/5²

Visual Studio 2026 Insiders is now available for download. Check out the announcement and try it out for yourself! devblogs.microsoft.com/visualstudio...

FinBizDevSecOps

@scott.hanselman.com you don't blog that much recently. Do you know if it is because your interests changed and what you discover today fits better in shorts/yt/etc. or because these platofrms offer a better way to present topics than a blog?

@terrajobst.net you are not recently hosting participating in the .NET API reviews? Are there any publicly available reasons we have not seen you for a while?

More Performance Measurement and Profiling of Roslyn Source-Generators upcoming in Part 2 of Benchmarking Compiler Extensions. We moved the live-stream by one day, to: Thursday, 2025-08-07 at the same time: 17:00 UTC #dotnet #CSharp #Roslyn #2codeOrNot2code www.youtube.com/watch?v=pRLR...

ClrMD is my new favorite #dotnet diagnostic tool: blog.ladeak.net/posts/clrmd-...

@tannergooding.bsky.social in today's .NET community standup there was a question if tensors support custom T. The answer suggests yes, but I assume that SIMD operations would 'kick-in' only if a IBinaryOperator<T> is defined for T. And vectorizing custom struct is difficult. Is this correct?

@madskristensen.net do you know if VS update installations (for simpler work loads like .NET9) could ever go without admin permissions? It is extremely painful in a corporate environment to keep VS updated, which requires 3-4 teams and 2 months to package up a new version.

@terrajobst.net when may we expect you on the next .NET API review stream?

Why would you need live translate with your mother? #apple #wwdc2025

"C# is cool again and you can't avoid it anymore..." youtu.be/zHNxbJeEaVM #dotnet #csharp

@davidfowl.com what is your thinking about stream prioritization in HTTP/2 for Kestrel?

Blogged: Creating your first sample game with MonoGame andrewlock.net/creating-you... In this post I provide an introduction to MonoGame, looking at it's history, the requirements for building with MonoGame, and finally a first sample app #dotnet #monogame

@scott.hanselman.com I see more&more content on Ollama/LLMs being slower on Windows to Linux on the same HW. Do you know what is behind this? Is it MS Defender, is it memory virtualization or some driver issue? (or something else)

Blogged: Converting a docker-compose file to .NET Aspire andrewlock.net/converting-a... In this post I describe how I converted the deployment method of the mailing-list manager lismonk from a docker-compose.yml file to an Aspire app host project #dotnet #Aspire #csharp

#build2025 it is rare that someone actually reads the AI responses. It is rare that someone writes the prompt live: all are well prepared multi sentence or paragraph of text.

#build2025 is watching people typing into chat windows

Blogged: Using the new .NET AI template to create a chatbot about a website andrewlock.net/using-the-ne... In this post I use the new Microsoft's new .NET AI template to ingest the contents of a website and create a chatbot that can answer questions with citations #dotnet #aspnetcore #ai

Vibe coding is like vacuum cleaning only where you see dust.

Blogged: Exploring the new AI chat template andrewlock.net/exploring-th... In this post I explore the new .NET AI Chat Web App template (currently in preview) and take a brief look at the implementation it provides #dotnet #aspnetcore

@kevingosse.net and @chrisnas.bsky.social the clrmd chapter of the book looks outdated. For example, DacInfo in Listing 15-23 was migrated in v2.1 (github.com/microsoft/cl...) and I see the current prerelease is v4. Unfortunately, clrmd's own Getting Started and samples are outdated too.

Blogged about ref readonly vs in parameters in #dotnet blog.ladeak.net/posts/refrea...

I guess many ref structs can slow down the GC. #dotnet

Now we have an official Microsoft NuGet account on BlueSky: https://msft.it/63321qA2DP Follow to stay up to date with everything related to .NET packaging! #dotnet #visualstudio #vscode

@kevingosse.net and @chrisnas.bsky.social thank you for the excellent updates for the books. Finally finished from p1-758. The only question I have left is "how objects only rooted by interior pointers are marked?" The book mentions bricks used for interior pointers during/after planning only.

@kevingosse.net and @chrisnas.bsky.social on page 670: "The ArrayMemoryPool<T>.Memory property just wraps a rented" I think should be instead ArrayMemoryPool<T><T>.Memory