GitHub Copilot in Visual Studio has evolved far beyond tab-completion. Copilot Chat, slash commands, multi-file edits, and workspace-aware suggestions make it a genuine pair programmer — if you know how to use it. Here’s the complete guide for .NET developers in 2026.

WPF in .NET 10 gets the closest thing to a visual redesign it’s had since .NET Core — a proper Windows 11 fluent theme, performance gains, and years of accumulated bug fixes. Whether that’s enough reason to upgrade depends on what your app needs. Here’s the full breakdown.

C# 14 ships with .NET 10 and brings features developers have been asking about for years — the field keyword for auto-properties, extension members, first-class spans, and a much cleaner params syntax. Here’s every feature explained with working code.

Semantic Kernel is Microsoft’s AI orchestration framework for .NET — it sits above individual AI API calls and handles the complex patterns: multi-step planning, plugin composition, memory, and agents. Here’s the beginner’s guide that explains where it fits and how to start using it.

SOLID principles aren’t academic theory — they’re the difference between a codebase you can change confidently and one that breaks in three places when you touch one. Here are real C# examples showing what violating each principle looks like and how to fix it.

Microsoft.Extensions.AI is the official abstraction layer for AI in .NET — a unified API that works with OpenAI, Azure OpenAI, Ollama, and any compatible provider. Once you build against it, switching models or providers is a one-line change. Here’s everything you need to know.