NEW: Based on Mozilla's tests, the Anthropic Mythos Preview security hype is real. @lhn.bsky.social w/ the scoop: www.wired.com/story/mozill...

.NET has an out of band update today to fix CVE-2026-40372, an Elevation of Privilege, which, in some cases, could allow an attacker to forge authentication tickets, or decode authentication tickets or other protected data. github.com/dotnet/annou...

My effort at solving the strong typed id problem in .net github.com/SimonCropp/S...

my effort at leveraging StringSyntaxAttribute to get compile time "type checking" github.com/SimonCropp/S...

Thanks to Duende Software for their generous support of VerifyTests duendesoftware.com/blog/2026040...

Check out our Blazorise Outlook Clone developed entirely with Blazor. This open-source project showcases everything you can do using Blazorise components and theming to build a professional email client UI. Find all the details here: github.com/Megabit/Blaz...

Descriptive parameter names in EF sql snapshots github.com/VerifyTests/...

testing specific EF migrations with LocalDb github.com/SimonCropp/L...

new version of DbToMermaid github.com/SimonCropp/D...

Ok, I'm in: if you build a plugin for JetBrains IDEs, I can review your Gradle build script. I'll verify if caching works, introduce all those good practices, and even migrate it out of Groovy. Drop me your GitHub repo, and I'll pick it up next week on the live stream! On me!

Today is my last day with the Deno team 🦕💖💔 I know they're gonna keep making awesome things. But now *I* need to make awesome things for someone else! If you're looking for a DevRel with a JS focus and extra sparkle, get in touch!

Microsoft.Data.SqlClient V7 is out github.com/dotnet/SqlCl...

Ukraine is holding back Russia and thus fulfilling the entire traditional mission of NATO without any soldiers or sailors from other countries. Trump is meanwhile demanding NATO allies leave the continent they are supposed to be defending to join him in a doomed adventure he chose in the Middle East

anyone here using sqlserver or postgres for a website/webapi and interested in a perf boost? github.com/SimonCropp/D... happy to get on a call and help set it up

i think i have squeezed as much perf out if this as i can. anyone up for reviewing it? github.com/SimonCropp/Delta

This looks like a nice clean solution to a wart on .NET's localization functionality - using Fody to set a default ErrorMessageResourceType and ErrorMessageResourceName (based on the attribute type). github.com/mrpmorris/Au... Seems crazy that this is necessary though - am I missing something?!

I wrote something on LinkedIn: www.linkedin.com/posts/psvens... I'm looking for a new gig and/or employment (if interesting enough). Please repost if you can! Much appreciated!

Dell. u should not need 13 processes to interact with a monitor anyone i know who knows anyone working at dell?

Thirteen years ago I built an open source library for building distributed apps in .NET. Since then it's been quietly running in production systems everywhere. But it looked neglected. Now it's back! damianm.com/posts/2026/n...

I deployed a v1.0 of DbToMermaid github.com/SimonCropp/D... Generate Mermaid ER diagrams from SQL Server databases or Entity Framework models

i just released v1.0 of EfOrderBy been using it in production for over a month github.com/SimonCropp/E...

just released v1.0 of github.com/SimonCropp/P... i have been using it for a few months in markdown snippets to avoid assembly conflicts in the mdbuild context

I just release v1.0 of github.com/SimonCropp/P... I have been using it in a significant number of projects over the last few months and it is stable A C# source generator that provides strongly-typed, compile-time access to project files marked with CopyToOutputDirectory in the .csproj file.

Relooted: the South African video game where players take back artefacts from western museums

Thanks to TestMu AI www.testmuai.com for sponsoring VerifyTests

TUnitMigrator: A .NET tool that migrates test projects from MSTest, NUnit, xUnit, and xUnit v3 to TUnit. github.com/SimonCropp/T... #tunit #dotnet

pretty happy i got package shading working so i can use the newest library versions and not have assembly conflicts in msbuild

Sample projects demonstrating how to configure Microsoft.Testing.Platform (MTP) with common .NET test frameworks. github.com/SimonCropp/M...

I was just told by @devlead.se that .NET 11 uses Spectre.Console! 🎉 github.com/dotnet/core/...

Polyfill now supports dotnet 11. and i added some net11 APIs github.com/SimonCropp/P... API count is now at 734

given the xunit package has been deprecated . I will be doing the same for Verify.Xunit if this is a problem for anyone please reach out www.nuget.org/packages/xunit xunit.net/docs/getting...

Does anyone know why the TimeProvider API doesnt have DateOnly and TimeOnly support? #dotnet

Open Source Maintenance Fee v1.1 robmensching.com/blog/posts/2...

doing my part to train the AIs committers.top/australia.html

This is wild notepad-plus-plus.org/news/hijacke...

xbox live took stronger action against jeffrey epstein than the entire us government

What he said

Submitted 2 security issues to NuGet and GitHub last year, finally heard back that they are low priority and not a big deal. I did manage to publish this package to NuGet. A bunch of unicode in there, but it looks genuine, right? Nobody would discover this via search because of the unicode.

Would've expected this count to be > 1 github.com/orgs/microso...

i built a little Australian holiday tracker in blazor webassembly. pmcau.github.io/AustralianHo... pretty happy i got export to excel working in the browser with no dependencies

Perf impact of using LocalDB to produce a new isolated DB for every test method: github.com/SimonCropp/L...

My automatic Entity Framework ordering project now does automatic index creation for the defined order github.com/SimonCropp/E...

I added support for custom index names to EntityFramework.OrderBy github.com/SimonCropp/E...

EntityFramework.OrderBy: Applies default ordering to EntityFramework queries based on fluent configuration. This ensures consistent query results and prevents non-deterministic ordering issues. github.com/SimonCropp/E...

lets see how this goes: Remove the Nuget Gallery "share on twitter" feature github.com/NuGet/NuGetG...

Morph: A .NET library that converts Microsoft Word DOCX documents into PNG images. github.com/SimonCropp/M...

i released a new version of naiad with better state diagram rendering github.com/SimonCropp/N...

I've written a new blog post on AI. I reluctantly learnt some of the concepts and tooling in this space and highlight these for newcomers. I felt I had to investigate rather than hate. I also discuss the flaws of AI, the impact of AI and the future of AI blog.jonathanchannon.com/2025-12-23-i...

still early days. but here is my attempt to implement a mermaid diagram renderer in .net github.com/SimonCropp/N...

A long‑anticipated development update on Catel 7 is finally here. geertvanhorrik.com/2025/12/28/c...