ADMT!
Starting January 1, 2027, if a machine rejects your job application in Colorado, you can ask for a human to review it. The law is SB 26-189, Colorado's Automated Decision-Making Technology Act, signed in May 2026. California's privacy regulator has ADMT rules for employers landing on the same date. What a company owes you when ADMT materially influences a hiring, firing, or similar decision: 0/ Notice at the point of interaction that ADMT is in play. 1/ A plain-language description of the machine's role within 30 days of an adverse outcome. 2/ Meaningful human review and reconsideration, on request. The limit: the review is owed when commercially reasonable, and only the Colorado Attorney General enforces it. You cannot sue on your own under this act. Not a ban on AI screening. A human you can reach when it says no. Know your rights. https://leg.colorado.gov/bills/sb26-189
Beyond Localhost: .NET Agents in Foundry
Your agent runs on your machine. What's next? Join this session for a demo-packed look at hosted agents in Microsoft Foundry and what they unlock for C# developers. Discover what changes when your agents move beyond localhost, why a managed home matters, and how to bring your .NET skills along for the ride. Less infrastructure plumbing, more possibilities beyond your laptop. Session: BRK031 Connect with .NET: Blog: https://aka.ms/dotnet/blog Twitter: https://aka.ms/dotnet/twitter TikTok: https://aka.ms/dotnet/tiktok Mastodon: https://aka.ms/dotnet/mastodon LinkedIn: https://aka.ms/dotnet/linkedin Facebook: https://aka.ms/dotnet/facebook Docs: https://learn.microsoft.com/dotnet Forums: https://aka.ms/dotnet/forums 🙋♀️Q&A: https://aka.ms/dotnet-qa 👨🎓Microsoft Learn: https://aka.ms/learndotnet #dotnet #dotnetconf
Protect your PC from AI coding agents while modernising legacy .NET apps
Have you experienced or heard that AI coding agents accidentally removed files or directories, or accessed to resources that you didn't allow? It can happen from time to time. We can't get rid of this behaviour from our AI coding agents. However, we can isolate it from our PC. Throughout this session, I'm going to discuss a couple of options how we can isolated or sandbox AI coding agents from our main PC while performing .NET app modernisation through the modernisation plugins of GitHub Copilot CLI. Session: BRK035 Connect with .NET: Blog: https://aka.ms/dotnet/blog Twitter: https://aka.ms/dotnet/twitter TikTok: https://aka.ms/dotnet/tiktok Mastodon: https://aka.ms/dotnet/mastodon LinkedIn: https://aka.ms/dotnet/linkedin Facebook: https://aka.ms/dotnet/facebook Docs: https://learn.microsoft.com/dotnet Forums: https://aka.ms/dotnet/forums 🙋♀️Q&A: https://aka.ms/dotnet-qa 👨🎓Microsoft Learn: https://aka.ms/learndotnet #dotnet #dotnetconf
Less Chat, More Action: AI-Powered .NET MAUI Apps
Adding a chat box to your app is easy. Making it useful takes more than connecting it to a language model. What if your users could ask your conference app to find sessions, update their personal agenda, or open the right screen, and see those changes reflected in the interface? In this demo-driven session, we'll connect AI to the features of an existing .NET MAUI conference companion app using Microsoft.Extensions.AI and experimental AI tooling from .NET MAUI Labs. We'll expose application actions as AI-callable tools, reuse services and view models, and keep the conversation and the UI working with the same application state. We'll also look at where to draw the line: validating requests, asking for confirmation before destructive actions, and handling requests the assistant cannot fulfill. You'll leave with practical patterns for building an assistant that does more than talk, while keeping your users in control. Session: BRK033 Connect with .NET: Blog: https://aka.ms/dotnet/blog Twitter: https://aka.ms/dotnet/twitter TikTok: https://aka.ms/dotnet/tiktok Mastodon: https://aka.ms/dotnet/mastodon LinkedIn: https://aka.ms/dotnet/linkedin Facebook: https://aka.ms/dotnet/facebook Docs: https://learn.microsoft.com/dotnet Forums: https://aka.ms/dotnet/forums 🙋♀️Q&A: https://aka.ms/dotnet-qa 👨🎓Microsoft Learn: https://aka.ms/learndotnet #dotnet #dotnetconf
Announcing .NET 11
<p>.NET 11 is here with C# 15, faster developer tools, runtime and library improvements, and new capabilities for web, mobile, desktop, and AI apps.</p> <p>The post <a href="https://devblogs.microsoft.com/dotnet/announcing-dotnet-11/">Announcing .NET 11</a> appeared first on <a href="https://devblogs.microsoft.com/dotnet">.NET Blog</a>.</p>
.NET and .NET Framework November 2026 servicing updates
<p>A recap of the latest servicing updates for .NET and .NET Framework for November 2026.</p> <p>The post <a href="https://devblogs.microsoft.com/dotnet/dotnet-and-dotnet-framework-november-2026-servicing-updates/">.NET and .NET Framework November 2026 servicing updates</a> appeared first on <a href="https://devblogs.microsoft.com/dotnet">.NET Blog</a>.</p>
The Weirdest Feature Microsoft Added in C# 15
Get any course 40% off: https://dometrain.com/courses/?ref=nick-chapsas&promo=youtube&coupon_code=BLACKFRIDAY26 Get the C# 15 Skill: https://dometrain.com/free/download-assets-the-weirdest-feature-microsoft-added-in-c-15/ Hello, everybody. I'm Nick, and in this video, I want to talk about the brand new feature called Labeled break and continue. goto has been in the language since forever but now we have a new way to use labels which is both awesome and weird at the same time. Don't forget to comment, like and subscribe :) Social Media: Follow me on GitHub: https://github.com/Elfocrash Follow me on Twitter: https://twitter.com/nickchapsas Connect on LinkedIn: https://www.linkedin.com/in/nick-chapsas #dotnet #csharp
C# Cheat Sheet: Modern Syntax Reference with Examples
A modern C# cheat sheet with copy-paste examples: types, collections, pattern matching, LINQ, async/await, records, and null handling for .NET.
System.Text.Json in .NET 11
Explore the latest System.Text.Json features in .NET 11, including support for C# unions and closed hierarchies, more capable source generation, and richer POCO annotations. Learn how these additions simplify JSON serialization and when to use them in your applications. Session: BRK041 Connect with .NET: Blog: https://aka.ms/dotnet/blog Twitter: https://aka.ms/dotnet/twitter TikTok: https://aka.ms/dotnet/tiktok Mastodon: https://aka.ms/dotnet/mastodon LinkedIn: https://aka.ms/dotnet/linkedin Facebook: https://aka.ms/dotnet/facebook Docs: https://learn.microsoft.com/dotnet Forums: https://aka.ms/dotnet/forums 🙋♀️Q&A: https://aka.ms/dotnet-qa 👨🎓Microsoft Learn: https://aka.ms/learndotnet #dotnet #dotnetconf
Securing Your NuGet Dependencies in the Age of AI
Jon Douglas is a Principal Product Manager at Microsoft specializing in software supply chain security. He leads work across NuGet, npm, and the Visual Studio Marketplace and he helped push the VEX vulnerability standard across the industry. He previously shipped many of NuGet's security features and worked on .NET and GitHub Copilot. Jon also sits on multiple committees for the NIH RECOVER initiative, where he helps design clinical trials, organize conferences, and review research proposals. He holds an MS in AI and ML from UT Austin. Session: BRK039 Connect with .NET: Blog: https://aka.ms/dotnet/blog Twitter: https://aka.ms/dotnet/twitter TikTok: https://aka.ms/dotnet/tiktok Mastodon: https://aka.ms/dotnet/mastodon LinkedIn: https://aka.ms/dotnet/linkedin Facebook: https://aka.ms/dotnet/facebook Docs: https://learn.microsoft.com/dotnet Forums: https://aka.ms/dotnet/forums 🙋♀️Q&A: https://aka.ms/dotnet-qa 👨🎓Microsoft Learn: https://aka.ms/learndotnet #dotnet #dotnetconf
Give Your .NET Agent a Face: Building an AI Desk Companion with M5Stack
AI agents normally live behind a chat window. What changes when we give one a physical face, a voice, and the ability to react to its environment? In this demo-driven session, we will turn an M5Stack/StackChan robot into a Tamagotchi-style AI desk companion. C++ running on the device controls its display, movement, and sensors, while a .NET 11 backend uses Aspire to orchestrate and observe the services behind the experience. We will connect Microsoft Foundry models for chat and vision, Microsoft Agent Framework for agent behavior, and GitHub Copilot SDK for tool-driven developer scenarios. We will also examine how an agent can use work context safely with WorkIQ, using synthetic or sanitized data rather than exposing private information. Attendees will see the complete architecture, a live end-to-end interaction, Aspire telemetry, and the design decisions required to connect embedded hardware with a modern .NET agent. The project will be accompanied by sample code and a setup guide so developers can build their own companion—or adapt the architecture to other devices. Session: BRK040 Connect with .NET: Blog: https://aka.ms/dotnet/blog Twitter: https://aka.ms/dotnet/twitter TikTok: https://aka.ms/dotnet/tiktok Mastodon: https://aka.ms/dotnet/mastodon LinkedIn: https://aka.ms/dotnet/linkedin Facebook: https://aka.ms/dotnet/facebook Docs: https://learn.microsoft.com/dotnet Forums: https://aka.ms/dotnet/forums 🙋♀️Q&A: https://aka.ms/dotnet-qa 👨🎓Microsoft Learn: https://aka.ms/learndotnet #dotnet #dotnetconf
How We Brought CoreCLR to .NET MAUI and Mobile
.NET mobile apps have used Mono since the early days of Xamarin. In .NET 11, .NET MAUI moves to CoreCLR on Android, iOS, Mac Catalyst, and tvOS. We'll follow a simplified Android startup path to see where the runtime fits, then compare Mono AOT, ReadyToRun, and NativeAOT. Along the way, we'll explain trimming and show how JSON source generation helps prepare an application for NativeAOT, without confusing those additional constraints with the default move to CoreCLR. Finally, we'll review startup and app-size results from Android and iOS and discuss what developers should test when moving to .NET 11. You'll leave with a clearer understanding of how .NET runs on mobile, what the new runtime means for your apps, and where to look when performance or compatibility does not behave as expected. Session: BRK034 Connect with .NET: Blog: https://aka.ms/dotnet/blog Twitter: https://aka.ms/dotnet/twitter TikTok: https://aka.ms/dotnet/tiktok Mastodon: https://aka.ms/dotnet/mastodon LinkedIn: https://aka.ms/dotnet/linkedin Facebook: https://aka.ms/dotnet/facebook Docs: https://learn.microsoft.com/dotnet Forums: https://aka.ms/dotnet/forums 🙋♀️Q&A: https://aka.ms/dotnet-qa 👨🎓Microsoft Learn: https://aka.ms/learndotnet #dotnet #dotnetconf
Small Models, Big .NET Energy
Big AI possibilities don't always need big models or a cloud connection. Join this session for a demo-packed look at Foundry Local and the growing world of small models, all through a C# developer's lens. Discover what's possible on your own hardware, where local AI shines, and how to balance capability, speed, and cost. Less hype about model size, more “wait, that's running locally?” moments. Session: BRK037 Connect with .NET: Blog: https://aka.ms/dotnet/blog Twitter: https://aka.ms/dotnet/twitter TikTok: https://aka.ms/dotnet/tiktok Mastodon: https://aka.ms/dotnet/mastodon LinkedIn: https://aka.ms/dotnet/linkedin Facebook: https://aka.ms/dotnet/facebook Docs: https://learn.microsoft.com/dotnet Forums: https://aka.ms/dotnet/forums 🙋♀️Q&A: https://aka.ms/dotnet-qa 👨🎓Microsoft Learn: https://aka.ms/learndotnet #dotnet #dotnetconf
Test Smarter: AI-Assisted Testing for Modern .NET
As AI accelerates software development, confidence in code quality becomes more important than ever. In this session, you'll learn how AI-powered testing workflows can help identify testing gaps, generate and improve tests, validate changes, and provide deeper insights into the quality of your code. Through practical demonstrations using Microsoft.Testing.Platform, MSTest, and modern .NET tooling, we'll explore how AI and proven testing practices work together to build software that developers can trust. You'll leave with concrete techniques for applying AI throughout the testing lifecycle while keeping humans in control of the final decisions. Session: BRK038 Connect with .NET: Blog: https://aka.ms/dotnet/blog Twitter: https://aka.ms/dotnet/twitter TikTok: https://aka.ms/dotnet/tiktok Mastodon: https://aka.ms/dotnet/mastodon LinkedIn: https://aka.ms/dotnet/linkedin Facebook: https://aka.ms/dotnet/facebook Docs: https://learn.microsoft.com/dotnet Forums: https://aka.ms/dotnet/forums 🙋♀️Q&A: https://aka.ms/dotnet-qa 👨🎓Microsoft Learn: https://aka.ms/learndotnet #dotnet #dotnetconf
We feel faster with AI… but are we creating more value? #Shorts
“We feel faster, but I don’t know if we are creating more value.” Speed is easy to feel. Value is harder to see. Here’s how I look at it. Are you shipping more, or shipping things that matter more? 👇 #AIEngineering #SoftwareEngineering #DeveloperProductivity #AI #ClaudeCode
Is it over for JetBrains Rider? New free .NET IDE
A new IDE for .NET has dropped called Passenger. Is it over for JetBrains Rider, Visual Studio and VS Code? Check out how it integrates with your agents in this MCP demo. Check out Passenger IDE at https://passenger-ide.net #coding #dotnet #csharp
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NuGet Supply Chain Attacks: How Malicious Packages Compromise Your .NET Build Pipeline (and How to Reduce the Risk)
A NuGet package doesn't need your code to call it to run arbitrary logic on your machine — MSBuild targets execute the moment you restore or build. Verified against the .NET 10 SDK with a lab-only PoC package and two tests: one proving the attack, one showing how package source mapping blocks it on a clean restore — plus the lock file and central package management controls that close the gaps mapping alone doesn't cover.
Microsoft Finally Fixed Inheritance in C# 15
Get the C# 15 Skill: https://dometrain.com/free/download-assets-microsoft-finally-fixed-inheritance-in-c-15/ Hello, everybody. I'm Nick, and in this video, I want to talk about the brand new feature called Closed Hierarchies that is added in C# 15 and .NET 11. This feature in my opinion fixes one of the biggest problems with inheritance in C# and makes sure that you and your agents will write batter and safer code. Don't forget to comment, like and subscribe :) Social Media: Follow me on GitHub: https://github.com/Elfocrash Follow me on Twitter: https://twitter.com/nickchapsas Connect on LinkedIn: https://www.linkedin.com/in/nick-chapsas #dotnet #csharp
Blazor WASM vs Server vs Hybrid: Which Render Mode to Use?
A clear decision guide to Blazor render modes: Static SSR, Interactive Server, Interactive WebAssembly, and Auto, plus Blazor Hybrid and how to choose.
Help Shape the Future of .NET: Take the 2026 .NET Developer Survey
<p>Take the 2026 .NET Developer Survey to share your experience, help identify common challenges, and guide future .NET investments. The survey takes about 15 minutes.</p> <p>The post <a href="https://devblogs.microsoft.com/dotnet/dotnet-developer-survey-2026/">Help Shape the Future of .NET: Take the 2026 .NET Developer Survey</a> appeared first on <a href="https://devblogs.microsoft.com/dotnet">.NET Blog</a>.</p>
Modernize your .NET apps for Windows Arm64 with GitHub Copilot
<p>Modernize your .NET apps for Windows Arm64 with the GitHub Copilot upgrade agent, from identifying migration blockers to planning and making code changes.</p> <p>The post <a href="https://devblogs.microsoft.com/dotnet/modernize-dotnet-apps-for-windows-arm64/">Modernize your .NET apps for Windows Arm64 with GitHub Copilot</a> appeared first on <a href="https://devblogs.microsoft.com/dotnet">.NET Blog</a>.</p>
Delivering Skills in NuGet packages
<p>Agent skills can be delivered in NuGet packages as a way to deliver up-to-date library documentation to models.</p> <p>The post <a href="https://devblogs.microsoft.com/dotnet/delivering-skills-in-nuget-packages/">Delivering Skills in NuGet packages</a> appeared first on <a href="https://devblogs.microsoft.com/dotnet">.NET Blog</a>.</p>
Get Ready for .NET Conf 2026!
<p>.NET Conf is one week away! Join us November 10-13 for the launch of .NET 11, two days of Microsoft sessions, and two days of Community Days.</p> <p>The post <a href="https://devblogs.microsoft.com/dotnet/get-ready-for-dotnet-conf-2026/">Get Ready for .NET Conf 2026!</a> appeared first on <a href="https://devblogs.microsoft.com/dotnet">.NET Blog</a>.</p>
Union Types are Finally in .NET, but who cares?
Get the C# 15 Skill: https://dometrain.com/free/download-assets-union-types-are-finally-in-net-but-who-cares/ Hello, everybody. I'm Nick, and in this video, I want to talk about the brand new feature called Union Types (or Discriminated Unions by some) that we are finally getting in C# 15. I will showcase the feature, explain what problem it solves and how you can let your agents know how to use it. Don't forget to comment, like and subscribe :) Social Media: Follow me on GitHub: https://github.com/Elfocrash Follow me on Twitter: https://twitter.com/nickchapsas Connect on LinkedIn: https://www.linkedin.com/in/nick-chapsas #dotnet #csharp
Understanding Lazy<T> thread safety modes
In this post I look at how the different `LazyThreadSafetyMode` values work with `Lazy<T>`, and how exceptions are handled for each mode
GitHub Actions Cron: Skip Builds When No Posts Are Due
Read YAML front matter dates in a GitHub Actions cron and call your Netlify build hook only when a post is due. Works with Hugo, Jekyll, Astro, and 11ty.
C# 14 Extension Members: The Shadowing Bug the Compiler Won't Warn You About
C# 14 lets extension blocks declare properties and static members — not just methods. That new surface comes with an old risk from a different angle: when a real member and an extension member share a name, the real member wins silently, with zero compiler warning. Verified against the .NET 10 SDK, including the exact diagnostics (CS9296, CS9339) a Roslyn-based test suite checks for.