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The .NET News Daily Issue #546

The .NET News Daily Issue #546

Your Daily Dose of .NET Insights, Tools, and Trends

Sep 22, 2026

Stop rewriting prompts. Start engineering loops.

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Today's Articles

Is Any() Really Better Than Count() > 0?

https://medium.com/@sthitaprajna360/is-any-really-better-than-count-0-56c612d8c8f3?source=rss------dotnet-5&utm_source=dotnetnews.co&utm_medium=referral&utm_campaign=the-net-news-daily-issue-546

System.Text.Json Polymorphism with Swagger in .NET 7

https://medium.com/@steponeit/system-text-json-polymorphism-with-swagger-in-net-7-d5bf84417361?source=rss------dotnet-5&utm_source=dotnetnews.co&utm_medium=referral&utm_campaign=the-net-news-daily-issue-546

Operators & Control Flow in C#: What .NET Interviews Actually Ask

https://medium.com/@anchalmehandiratta7/operators-control-flow-in-c-what-net-interviews-actually-ask-787da308a85b?source=rss------csharp-5&utm_source=dotnetnews.co&utm_medium=referral&utm_campaign=the-net-news-daily-issue-546

CommandFlow — version 2.0

https://medium.com/@floriannecula/commandflow-version-2-0-414f8a328504?source=rss------csharp-5&utm_source=dotnetnews.co&utm_medium=referral&utm_campaign=the-net-news-daily-issue-546

Microsoft Agent Framework: Human In The Loop

https://jesseliberty.com/2026/09/14/microsoft-agent-framework-human-in-the-loop/?utm_source=dotnetnews.co&utm_medium=referral&utm_campaign=the-net-news-daily-issue-546

Discover Essential Skills Every .NET

https://medium.com/@abinayabhi017/discover-essential-skills-every-net-b70a91f4f03c?source=rss------dotnet-5&utm_source=dotnetnews.co&utm_medium=referral&utm_campaign=the-net-news-daily-issue-546

Authentication in ASP.NET Core

https://medium.com/@rhutu.takle/authentication-in-asp-net-core-93ad994296d1?source=rss------dotnet-5&utm_source=dotnetnews.co&utm_medium=referral&utm_campaign=the-net-news-daily-issue-546

How can I remove the Close button from my window caption?

https://devblogs.microsoft.com/oldnewthing/20260911-00/?p=112691&utm_source=dotnetnews.co&utm_medium=referral&utm_campaign=the-net-news-daily-issue-546

Building a RAG Application with .NET 10 and OpenAI

https://medium.com/@anujangooral/building-a-rag-application-with-net-10-and-openai-1422a6ff4603?source=rss------csharp-5&utm_source=dotnetnews.co&utm_medium=referral&utm_campaign=the-net-news-daily-issue-546

Adding an Index Made This Query Slower

https://milanjovanovic.tech/blog/when-postgres-picks-the-wrong-index?utm_source=dotnetnews.co&utm_medium=referral&utm_campaign=the-net-news-daily-issue-546

What if an agent could refactor your agent?

https://www.youtube.com/watch?v=X-uQwleiUwA&utm_source=dotnetnews.co&utm_medium=referral&utm_campaign=the-net-news-daily-issue-546

Value Types vs Reference Types in C#: What .NET Interviews Actually Ask

https://medium.com/@anchalmehandiratta7/value-types-vs-reference-types-in-c-what-net-interviews-actually-ask-95c41c8d0d9d?source=rss------csharp-5&utm_source=dotnetnews.co&utm_medium=referral&utm_campaign=the-net-news-daily-issue-546

8 Modern C# Features That Make Everyday Code Shorter and Safer

https://medium.com/@Rajdip27/8-modern-c-features-that-make-everyday-code-shorter-and-safer-762c95496709?source=rss------csharp-5&utm_source=dotnetnews.co&utm_medium=referral&utm_campaign=the-net-news-daily-issue-546

When (Not) to Use MCP in .NET: A Practical Guide

https://topuzas.medium.com/when-not-to-use-mcp-in-net-a-practical-guide-a248f879861d?source=rss------csharp-5&utm_source=dotnetnews.co&utm_medium=referral&utm_campaign=the-net-news-daily-issue-546

I Built a Finite-State Transducer in C# Because a Dictionary Wasn’t Enough

https://jordansrowles.medium.com/i-built-a-finite-state-transducer-in-c-because-a-dictionary-wasnt-enough-61f4d41365ce?source=rss------csharp-5&utm_source=dotnetnews.co&utm_medium=referral&utm_campaign=the-net-news-daily-issue-546

Why didn't ReadDirectoryChangesW provide a way to correlate the two sides of a rename operation?

https://devblogs.microsoft.com/oldnewthing/20260914-00/?p=112696&utm_source=dotnetnews.co&utm_medium=referral&utm_campaign=the-net-news-daily-issue-546

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