iiinova — where your digital self keeps evolving

Reposted by Mattias Karlsson

.NET Foundation @dotnetfoundation.org · 6h

ICYMI: Heads up for .NET Foundation members: in the first week of October you'll get an email from contact@dotnetfoundation.org asking you to activate your account on our new membership platform. Click the link and set a password. More here: dotnetfoundation.org/news-events/... #dotnet

dotnetfoundation.org

.NET Foundation

012

Mattias Karlsson @devlead.se · 7h

I’ve had a blog post sitting in my drafts for a couple of years. I originally wrote it just for myself to process things, but I recently guested on a podcast about the topic. I might just revisit the draft and publish it so you can read it too when the podcast episode goes live.

030

Mattias Karlsson @devlead.se · 22h

I know what I will be doing tomorrow; upstream changes keep me on my toes...🤷

011

Reposted by Mattias Karlsson

Mattias Karlsson @devlead.se · 24/09/2026

Not sure how useful it is yet, but parsing PageFind indexes in C# was a fun kata. Built a .NET MCP Server for AI agents to search PageFind indexes, locally or online. Demo: list indexes, search my blog & fetch page. Open source & on @nuget.org: www.nuget.org/packages/pfmcp #dotnet #mcp #pagefind

112

Mattias Karlsson @devlead.se · 24/09/2026

112

Reposted by Mattias Karlsson

NuGet @nuget.org · 23/09/2026

⚠️ Action required: Microsoft's NuGet author-signing certificate changes starting Sept 23, 2026. If you allow-list Microsoft in trustedSigners or use dotnet nuget verify with fingerprints, add the new cert now to avoid NU3034 install failures. devblogs.microsoft.com/dotnet/micro...

devblogs.microsoft.com

Microsoft is updating its author-signing certificate starting September 23, 2026 - .NET Blog

Starting September 23, 2026, Microsoft is updating the author-signing certificate used for NuGet packages. Customers using trusted signer policies or certificate fingerprint verification should add th...

022

Mattias Karlsson @devlead.se · 17/09/2026

That wonderful feeling when you meet a deadline with room to spare, having been repeatedly asked for updates throughout the whole process, only to be met with total silence after you deliver.🤣😢😎

151

Reposted by Mattias Karlsson

Jamie Taylor @gaprogman.com · 16/09/2026

This 👇

111

Reposted by Mattias Karlsson

Barry Dorrans @blowdart.me · 16/09/2026

Reminder ⏰ .NET 8 and .NET 9 support ends on November 10th. Get your apps moved to .NET 10 before then.

1219

Reposted by Mattias Karlsson

.NET Foundation @dotnetfoundation.org · 16/09/2026

Cake v6.3.0 is out 🚀🍰 NuGetLogin for GitHub Actions OIDC trusted publishing (no long-lived API keys), nullability-aware aliases, typed dotnet tool aliases, verbosity via config, and light-theme-friendly reports. hubs.li/Q04xvj2B0 #dotnet #devops #csharp

152

Reposted by Mattias Karlsson

Khalid ⚡ @khalidabuhakmeh.mastodon.social.ap.brid.gy · 16/09/2026

Anyone consider themselves a #Blazor Consultant and would like to try out an experiment with me? Looking for a handful of professionals who like working with the technology. #dotnet

034

Reposted by Mattias Karlsson

Cake Build @cakebuild.net · 14/09/2026

cakebuild.net

Cake - Cake v6.3.0 released

1105

Reposted by Mattias Karlsson

Cake Build @cakebuild.net · 14/09/2026

We are starting to prepare our next release, 6.3.0 ( github.com/cake-build/c... ). This is your friendly reminder that if you haven't pinned to a specific version of Cake, you should do it now :-) 📌 🍰 cakebuild.net/docs/writing...

github.com

cake-build/cake

:cake: Cake (C# Make) is a cross platform build automation system. - cake-build/cake

075

Mattias Karlsson @devlead.se · 12/09/2026

Just about to cast my vote early in the Swedish elections! Even with a queue today, I love it. It’s a privilege to live in a country that lowers the bar to vote and where democratic outcomes are always respected, even if it's not the result you personally hoped for.

0100

Reposted by Mattias Karlsson

Roland Pierik @roleo.eurosky.social · 08/09/2026

The number of cases of cervical cancer reported in Scotland among women given the HPV vaccine at 12-13 years of age is now zero. Zero. Zero. Zero. Zero. Zero. Zero. Zero. Zero. Zero. Zero. Zero. Zero. Zero. Zero. Zero. Zero. Zero. Zero. Zero. Zero. Zero. Zero. Zero. www.bbc.com/news/article...

bbc.com

No cervical cancer cases in fully HPV-vaccinated women in Scotland

A study published by Public Health Scotland finds that the HPV vaccine is "highly effective".

6360692261

Mattias Karlsson @devlead.se · 09/09/2026

When you maintain more than 50 #dotnet OSS projects, an SDK/Servurity update can lead to a long tail of releases, so to reduce the number of releases and ensure the latest bits possible in each release, I've resorted to going in waves based on the dependency graph, automation is nice here.

Generated checklist, issue in private repo, waves of dependencies, when verified on NuGet, the next wave gets updated and released, and so on.

030

Reposted by Mattias Karlsson

Mattias Karlsson @devlead.se · 08/09/2026

.NET 11 RC 1 was just released🎉, and it's got a go-live license; let's ship some prod workloads, analyze, and learn for the RTM release in November🚀#dotnet dotnet.microsoft.com/en-us/downlo...

Go-live releases are supported by Microsoft in production. These are typically our release candidate builds, just before the generally available (GA) release.

072

Mattias Karlsson @devlead.se · 08/09/2026

.NET 11 RC 1 was just released🎉, and it's got a go-live license; let's ship some prod workloads, analyze, and learn for the RTM release in November🚀#dotnet dotnet.microsoft.com/en-us/downlo...

072

Reposted by Mattias Karlsson

Øredev @oredev.org · 08/09/2026

Want to showcase your startup to the Øredev community? Apply to be part of our Emerging Tech Program! Three winners will claim a spot for their solution on our exhibition floor, and take part in an Emerging tech panel on stage. 👉 Apply today! forms.gle/7DbXsWL2x2ruugdN9

Young man in a blue vest explaining tech details on a touchscreen at an Emerging Tech Program booth.

021

Mattias Karlsson @devlead.se · 04/09/2026

Sometimes you need to ship on a Friday, and it's good that you did😎

Error analytics graph going down to zero

010

Mattias Karlsson @devlead.se · 04/09/2026

Localized application exceptions are fun... as one often codes in English, they might not even make sense to a developer who knows the language thrown🤷

040

Reposted by Mattias Karlsson

The Verge @theverge.com · 02/09/2026

1Password faced immediate backlash from customers this week over a $300,000 pledge in support of a Linux distro created by David Heinemeier Hansson, who has regularly published overtly racist blog posts that include comments calling for deportation of ethnic minorities in Europe.

theverge.com

1Password wades into a right-wing mess after funding a Linux project

The controversy surrounds David Heinemeier Hansson, who has posted strident anti-vax and anti-immigrant views.

18581203

Reposted by Mattias Karlsson

Avalonia UI @avaloniaui.net · 02/09/2026

Hot Reload for Avalonia is here 🔥 Edit your XAML or C#, and see the changes immediately in your running app. No restart. No renavigation. Support for Windows, macOS, Linux, iOS and Android. avaloniaui.net/blog/hot-re...

avaloniaui.net

Hot Reload for Avalonia - Avalonia UI Blog

Avalonia Hot Reload is here: edit XAML and C#, see it live, no restart, on desktop and mobile.

0169

Reposted by Mattias Karlsson

Andrew Lock "Sock" @andrewlock.bsky.social · 01/09/2026

Blogged: The pain of serializing unions and closed class hierarchies with System.Text.Json in .NET 11 andrewlock.net/exploring-th... In this post I discuss the System.Text.Json support for unions and closed hierarchies coming in .NET 11, the decisions made and some of the sharp edges I hit #dotnet

andrewlock.net

The pain of serializing unions and closed class hierarchies with System.Text.Json: Exploring the .NET 11 preview - Part 7

In this post I discuss the System.Text.Json support for unions and closed hierarchies coming in .NET 11, the decisions made, and some of the sharp edges I hit

1195

Reposted by Mattias Karlsson

Kirill Osenkov @kirillosenkov.com · 26/08/2026

ILSpy working in a browser: osenkov.com/ilspy Powered by @ilspy.bsky.social and @avaloniaui.net

Screenshot of a browser tab and ILSpy UI in it: tree with ICSharpCode.Decompiler assembly on the left, with namespaces and types, decompiled assembly attributes in a yellow text editor on the right

43911

Reposted by Mattias Karlsson

Kodsnack @podsnack.se · 26/08/2026

Vad är grejen med @oredev.org ? Vi bad jourhavande padda förklara charmen med utvecklarkonferensen Øredevs bredd och djup. Øredev finns på oredev.org, Kodsnack på kodsnack.se (och överallt där poddar finns!) #podcast #oredev #utvecklarkonferens #convinceYourBoss

032

Mattias Karlsson @devlead.se · 25/08/2026

A SaaS provider just asked me to rate the service they still haven't been able to activate after a week of support tickets back and forth...

110

Reposted by Mattias Karlsson

Maxwolf @bigmaxwolf.com · 14/08/2026

OREGON TRAIL A clone of the popular 90's computer game, rebuilt from scratch and playable right in your terminal. It is free, it runs on Windows, Mac, and Linux, and it comes with the original MECC artwork and chiptunes bundled in. C# source is on GitHub. bigmaxwolf.com/oregon-trail...

24422112

Reposted by Mattias Karlsson

Rob Francis @robertfrancis.co.uk · 01/08/2026

I see they've named a bus stop after Gianni Infantino...

02711

Reposted by Mattias Karlsson

Øredev @oredev.org · 27/07/2026

We are officially 100 days from #Oredev2026 🎉 The countdown is on, and the excitement behind the scenes is rising. Soon over a thousand passionate developers, architects, and tech leaders will gather in Malmö to reconnect, share what we've been working on, and learn from one another. See you there?

031

Reposted by Mattias Karlsson

rangemarten.bsky.social @rangemarten.bsky.social · 22/07/2026

@podsnack.se Just FYI tweaked the shader for the podcast 710 a bit. Added music and smoothed the font. It's now a multi pass shader so might struggle on mobiles. www.shadertoy.com/view/ffy3zz

A bouncing ball shader made for the kodsnack #710 podcast episode. With music.

042

Reposted by Mattias Karlsson

Øredev @oredev.org · 20/07/2026

Why volunteer at Øredev?   We asked the stars that made Øredev possible last year, and there was a theme that came through in a lot of their answers: the people you meet. 🫶 Speakers, partners, attendees, there are so many connections being made 👉 ow.ly/OUvG50ZnjKC

021

Reposted by Mattias Karlsson

Mattias Karlsson @devlead.se · 17/07/2026

This is what happens when you've got more than fifty .NET open-source projects and they release new .NET SDKs 🤣 #dotnet #PatchTuesday

Screenshot: You have used 90% of the Actions storage included for the devlead account

1131

Mattias Karlsson @devlead.se · 17/07/2026

This is what happens when you've got more than fifty .NET open-source projects and they release new .NET SDKs 🤣 #dotnet #PatchTuesday

1131

Mattias Karlsson @devlead.se · 16/07/2026

Some Facebook marketplace conversations makes be just want to make a video of burning the item and sending it to the "potential" "buyer"... 🤣

110

Reposted by Mattias Karlsson

Mattias Karlsson @devlead.se · 15/07/2026

10 years. 10 MVP awards🏆 . Honored, humbled, and proud to be recognized once again as a Microsoft MVP in Developer Technologies (.NET). #MVPBuzz #dotnet

2352

Mattias Karlsson @devlead.se · 15/07/2026

10 years. 10 MVP awards🏆 . Honored, humbled, and proud to be recognized once again as a Microsoft MVP in Developer Technologies (.NET). #MVPBuzz #dotnet

2352

Mattias Karlsson @devlead.se · 14/07/2026

I'm a great private preview beta tester, nothing's "default" US developer on my machine, Swede, with English OS language, but Swedish dates, currency, and keyboard (and en-US) settings in a positive UTC timezone. I break things just by being me 🤣

080

Reposted by Mattias Karlsson

Steve the Muppet Wrangler @beardog63.bsky.social · 13/07/2026

Fun fact: To keep production costs low, many Star Trek scenes were actually filmed on Earth rather than on location in outer space.

1452267202

Reposted by Mattias Karlsson

Kodsnack @podsnack.se · 07/07/2026

Look at this beauty, a shader inspired by the episode image!

021

Reposted by Mattias Karlsson

Phil Scott @philco.bsky.social · 06/07/2026

Added some new diagram types to my documentation diagram tool, Beck usepennington.github.io/beck/ First up, class diagram

a simple class diagram showing Entity, Order, Customer, Orderline, and IOrderNotifier

165