.NET Data Community Standup: You won't believe what Chris is doing with EF interceptors 🤯
Join us for another show where Chris Klug shows us all the things he uses interceptors for! 🎙️ Featuring: Chris Klug, Jiri Cincura #ef #efcore #data #dotnet #interceptors
Production Ready: Observability, Governance and Deployment
The last episode covers what you need before any of this runs somewhere real. OpenTelemetry traces and logs show exactly what the agent did on each turn. Purview handles governance and data protection. Evaluation gives us a way to tell whether quality holds as the SDK keeps moving. Then we deploy to Foundry Hosted Agents so the thing runs as a service instead of a console app. We close by walking through the full refresh-prompt workflow as a maintenance pattern worth stealing. 📌 This event is part of a series. Learn more here: https://aka.ms/FMTA/series 🔗 Learn more by exploring the resource: https://aka.ms/AgentHarness #MicrosoftReactor #LearnConnectBuild [eventID:27520]
.NET + Foundry, better together
What can you build with .NET and Microsoft Foundry? Let’s find out together! Join us for a series of practical explorations featuring new SDK capabilities, cool projects, and the latest Foundry features and services. With live demos, code, and plenty of curiosity, each episode offers something new for .NET developers looking to learn, experiment, and build with AI. 🔗 Learn more by exploring the resources: https://aka.ms/MSFTFoundryDoc https://aka.ms/AIappsfordotNETdev 📌 This event is part of a series. Learn more here: https://aka.ms/dotNET-Foundry #MicrosoftReactor #LearnConnectBuild #dotNET #MicrosoftFoundry #C# #AI #SDKs [eventID:27634]
.NET + Foundry, better together
What can you build with .NET and Microsoft Foundry? Let’s find out together! Join us for a series of practical explorations featuring new SDK capabilities, cool projects, and the latest Foundry features and services. With live demos, code, and plenty of curiosity, each episode offers something new for .NET developers looking to learn, experiment, and build with AI. 🔗 Learn more by exploring the resources: https://aka.ms/MSFTFoundryDoc https://aka.ms/AIappsfordotNETdev 📌 This event is part of a series. Learn more here: https://aka.ms/dotNET-Foundry #MicrosoftReactor #LearnConnectBuild #dotNET #MicrosoftFoundry #C# #AI #SDKs [eventID:27632]
.NET + Foundry, better together
What can you build with .NET and Microsoft Foundry? Let’s find out together! Join us for a series of practical explorations featuring new SDK capabilities, cool projects, and the latest Foundry features and services. With live demos, code, and plenty of curiosity, each episode offers something new for .NET developers looking to learn, experiment, and build with AI. 🔗 Learn more by exploring the resources: https://aka.ms/MSFTFoundryDoc https://aka.ms/AIappsfordotNETdev 📌 This event is part of a series. Learn more here: https://aka.ms/dotNET-Foundry #MicrosoftReactor #LearnConnectBuild #dotNET #MicrosoftFoundry #C# #AI #SDKs [eventID:27631]
.NET + Foundry, better together
What can you build with .NET and Microsoft Foundry? Let’s find out together! Join us for a series of practical explorations featuring new SDK capabilities, cool projects, and the latest Foundry features and services. With live demos, code, and plenty of curiosity, each episode offers something new for .NET developers looking to learn, experiment, and build with AI. 🔗 Learn more by exploring the resources: https://aka.ms/MSFTFoundryDoc https://aka.ms/AIappsfordotNETdev 📌 This event is part of a series. Learn more here: https://aka.ms/dotNET-Foundry #MicrosoftReactor #LearnConnectBuild #dotNET #MicrosoftFoundry #C# #AI #SDKs [eventID:27630]
Top 11 New Features in .NET 11 in 11 Minutes and 11 Seconds!!11!
What's new in C# 15, ASP.NET Core 11 and .NET 11 in a race against the clock! Code is here: https://github.com/edandersen/dotnet-11-whats-new 0:00 Intro 0:09 C# 15 Collection Expression Arguments 1:29 C# 15 Union Types 2:02 C# 15 Closed Class Heirarchies 3:10 C# 15 Extension Indexers 4:01 C# 15 Labelled Break and Continue 5:43 ASP.NET Core MVC Short Circuit Attribute 6:59 ASP.NET Core 11 Async Validation 8:14 ASP.NET Core 11 ZStandard HTTP Compression 9:20 ASP.NET Core 11 Dynamic Output Cache Policies 10:13 Runtime Async 10:54 Outtro and final joke #dotnet #csharp #coding
The Claude feature to validate your changes #claude #aiengineer #claudecode
Microsoft is updating its author-signing certificate starting September 23, 2026
<p>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 the new certificate as soon as possible.</p> <p>The post <a href="https://devblogs.microsoft.com/dotnet/microsoft-author-signing-certificate-update-2026/">Microsoft is updating its author-signing certificate starting September 23, 2026</a> appeared first on <a href="https://devblogs.microsoft.com/dotnet">.NET Blog</a>.</p>
Creating a memory dump in C#
<p>Learn how to create a memory dump in C# to capture the state of your application for debugging purposes.</p> <p>The post <a href="https://devblogs.microsoft.com/dotnet/creating-a-memory-dump-in-csharp/">Creating a memory dump in C#</a> appeared first on <a href="https://devblogs.microsoft.com/dotnet">.NET Blog</a>.</p>
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Experimental support for Device Bound Session Credentials (DBSC) in ASP.NET Core: Exploring the .NET 11 preview - Part 8
In this post I look at the new experimental support for DBSC provided by the Microsoft.AspNetCore.Authentication.DeviceBoundSessions package
Microsoft ignores C# and .NET... AGAIN
Another massive AI porting project at Microsoft decided to ignore C# and .NET and chose Rust... but why? And was it the right choice? 0:00 Intro 0:24 The Copilot Rust Migration 1:03 Community reaction 1:46 Architectural concerns 2:23 Rationale for choosing Rust 3:13 C# and native AOT capabilities 3:57 Performance and validity 4:23 AI generation and error analysis 5:33 Microsoft's broader rust adoption 6:47 Closing thoughts and critique #dotnet #csharp #rust
Spying on Claude Code: more lifecycle events, different blind spots
How Claude Code hooks differ from Cursor: broader lifecycle and permission telemetry, strong native IDs, batch and compaction events, but no thought or specialized execution hooks.
Is Local AI Worth it?
There's No Official Claude Agent SDK for C#. Here's What to Use Instead
The Claude Agent SDK (the package that turns Claude into an autonomous coding agent with tools, permissions, and a conversation loop) only ships officially for Python and TypeScript. In C#, the closest thing is buried inside the regular Anthropic SDK: a `ToolRunner` helper that drives the tool-use loop for you. Here's how to build a real file-editing, command-running agent with it, and where the unofficial alternatives fit.
.NET AI Community Standup: Interview Coach Evolves: MAF + GitHub Copilot SDK
We just updated the Interview Coach! Join Bruno Capuano and Justin Yoo to explore the latest evolution of Interview Coach, a .NET sample built with Microsoft Agent Framework (MAF), now with GitHub Copilot SDK support. Discover how Copilot moves beyond the code editor to power an application where specialist agents review resumes, ask behavioral and technical questions, and deliver personalized feedback. The Copilot SDK handles model interactions and tool calls, while Agent Framework coordinates the agents and their handoffs. With shared MCP tools, a Blazor interface, and continued Microsoft Foundry support, this sample offers a practical starting point for your own agent-powered applications. 🌍 Explore the source code and continue learning with the companion walkthrough and hands-on workshop: https://aka.ms/mafinterviewcoach/repo https://aka.ms/mafinterviewcoach/blog https://aka.ms/mafinterviewcoach/workshop 🔗 Links: https://learn.microsoft.com/en-us/collections/d4gkh1tee47wo?source=docs 🎙️ Featuring: Bruno Capuano https://www.linkedin.com/in/elbruno/, Justin Yoo https://www.linkedin.com/in/justinyoo/ #dotnet #MAF #GitHubCopilotSDK #Agents #AI
Scaling the Claw: Skills, Shell, CodeAct and Background Agents
Four additions make the agent genuinely useful. Skills package domain knowledge such as valuation and risk scoring into files it discovers and loads only when a request calls for them, including skills managed centrally in Foundry that update with no redeploy. Shell access lets it reorganise a messy folder of trade confirmations, confined to one working directory. CodeAct gives it a sandbox where it writes and runs code to work out an answer rather than guessing at the arithmetic. Background agents let it research several tickers at once and pull the results back together. 📌 This event is part of a series. Learn more here: https://aka.ms/FMTA/series 🔗 Learn more by exploring the resource: https://aka.ms/AgentHarness ⌚ Chapters: 00:00 Introduction and Welcome 02:17 Defining the Agent and the Harness 04:42 Recap of Session 1 and 2 09:51 Introduction to Skills in the Harness 12:13 Demonstrating Skill Discovery and Loading 19:36 Executing Skills with the Microsoft Agent Framework 24:25 Confined Shell Access and Security Policies 28:51 Implementing Local Shell Executors 35:42 Demo: Tidy up Trade Confirmations via Shell 42:25 CodeAct and Python Scripting for Calculations 47:08 Demo: Running Portfolio Calculations with CodeAct 51:51 Introduction to Background Agents 53:25 Demo: Research Agent Orchestration #MicrosoftReactor #LearnConnectBuild [eventID:27519]
3 unknown Claude Code Skills #claudecode #claude #aiengineering
Build Your Own AI Agent Harness in C#, the MafClaw Live Series
<p>I am building a complete C# agent live, from a single call around an IChatClient to a production-ready, observable, governed agent, using the Microsoft Agent Framework harness in a 4-part Microsoft Reactor series.</p> <p>The post <a href="https://devblogs.microsoft.com/dotnet/build-your-own-ai-agent-harness-in-csharp-the-maf-claw-live-series/">Build Your Own AI Agent Harness in C#, the MafClaw Live Series</a> appeared first on <a href="https://devblogs.microsoft.com/dotnet">.NET Blog</a>.</p>
Performance Improvements in .NET 11
<p>Take a tour through hundreds of performance improvements in .NET 11.</p> <p>The post <a href="https://devblogs.microsoft.com/dotnet/performance-improvements-in-net-11/">Performance Improvements in .NET 11</a> appeared first on <a href="https://devblogs.microsoft.com/dotnet">.NET Blog</a>.</p>
My Claude Code Status Line (Steal It)
💎 Download my script here: https://gui-ferreira.kit.com/c6dd52421e #claude #claudecode
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Understanding Device Bound Session Credentials (DBSC)
In this post I provide an introduction to Device Bound Session Credentials, I look at how DBSC protects against session hijacking, and how the protocol works