Friday, February 20, 2026

Sudhir Mangla maps out an architecture-first blueprint for building global .NET apps that behave consistently across platforms by adopting ICU, resolving culture correctly, and keeping formatting in the presentation layer. This post helps you avoid costly i18n pitfalls with concrete patterns for NodaTime, money as structured data, ICU MessageFormat and Fluent, RTL friendly CSS, culture-aware storage and search, plus production-grade caching, testing, and trimming.

Mike Irving shows how to target .NET 10 from Visual Studio 2022 without jumping to the new IDE by installing the .NET SDK and verifying with dotnet --version, so you can keep your project moving. In this post he also shares when an upgrade to Visual Studio 2026 makes sense and mentions alternatives like VS Code with C# Dev Kit or Rider.

Round The Code busts five Minimal API myths with practical patterns for moving logic out of Program.cs, organizing route groups, unit testing handlers, and wiring up authorization, validation, and OpenAPI in .NET 10. If you are coming from controllers, this post shows how to keep Minimal APIs clean, scalable, and well documented so they fit real world apps, not just toy projects.

Rolf Bjarne lays out the dotnet/macios plan for Xcode 26.3 support, from branching and version bumps to API bindings and the xtro and introspection test gauntlet. This post gives a behind the scenes look at how .NET for iOS and macOS track new Xcode releases, and what that means for MAUI dependencies, NuGet packages, and your builds staying green.

Peter Ritchie introduces Pri.ProductivityExtensions.Source, a source-only NuGet that adds internal polyfills for newer BCL types so modern C# features work in .NET Standard libraries without extra assemblies. This post lays out why features like ranges, indices, and CallerArgumentExpression trip up .NET Standard projects and how the package unblocks analyzers and PowerShell modules while keeping wide compatibility.

Ali Hamza Ansari breaks down how .NET 10 and C# 14 turbocharge API model validation by swapping reflection for precomputed metadata, cutting allocations, and streamlining hot paths for steadier p95 and p99 latency. In this post you get a minimal BenchmarkDotNet setup comparing .NET 8 and .NET 10 plus practical context on why these changes can deliver around 3x faster validation in real traffic.

Steven Giesel rolls out a February refresh of his browser-based .NET Toolbox, adding an Options Generator that turns JSON config into C# options classes, a typed DI helper for HttpClient and SignalR, and an SRP analyzer to spot single responsibility drift. This post shows how these open source, client-side tools cut boilerplate and encourage cleaner design, with Roslyn-powered ideas possibly on the horizon.

Anthony Giretti gives a clear, no-drama tour of .NET 10's new post-quantum crypto, covering ML-DSA, SLH-DSA, and ML-KEM with patterns that feel like everyday System.Security.Cryptography. In this post you will learn when each algorithm shines and how to future-proof signatures and key exchange in real apps without rewriting everything.

The Visual Studio team rolls out 2026 updates that weave AI into everyday C# work with Copilot powered test generation, call stack analysis, and NuGet security help from both an MCP server and new audit sources. ASP.NET and Blazor devs get faster Razor Hot Reload with auto restart, a snappier Razor editor with Tag Helper go to definition and better IntelliSense, plus practical IDE polish like speedy scrolling, colorized completions, and cleaner Solution Explorer views.

Mori recounts a production incident where orders vanished after a clean deploy, tracing it to EF Core defaults hiding behind a perfectly normal DbSet. This post shows how to take back control with explicit, centralized configuration for entities, clarifying relationships and delete behavior to keep data safe when version or model changes roll through.

Daniel Hindrikes walks us through the new C# expressions feature for .NET MAUI. C# Expressions is so much more than replacing converters; you can finally write inline, strongly-typed logic directly in XAML, making your UI code cleaner and faster to write. Not to mention its performance boost!

This month's .NET AI Community Standup brought Bruno Capuano, Jeff Fritz, and Maanav Dalal together to explore Foundry Local and how C# developers can use it to run AI models directly on their machines, without cloud dependencies. Watch them discuss architecture, local-first AI scenarios, and how Foundry Local fits into modern .NET and AI workflows.