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dotInsights | February 2026
Did you know? C# allows digit separators (_) in numeric literals to make large numbers more readable, e.g., int num = 1_000_000; is valid and equals one million.

Welcome to dotInsights by JetBrains! This newsletter is the home for recent .NET and software development related information.
🔗 Links
Here’s the latest from the developer community.
- Agent Skills: From Claude to Open Standard to Your Daily Coding Workflow | C# 14 Extension Members: Complete Guide to Properties, Operators, and Static Extensions | C# 14 More Partial Members: Partial Events and Partial Constructors – Laurent Kempé
- Exploring Marshal Methods in .NET MAUI – Leomaris Reyes
- MCPs for Developers Who Think They Don’t Need MCPs – Angie Jones
- JetBrains ReSharper for Visual Studio – Karen Payne
- Enterprise Patterns, Real Code: Implementing Fowler’s Ideas in C# – Chris Woodruff
- How to use Agent Skills in GitHub Copilot – Daniel Ward
- .NET Toolbox – Steven Giesel
- Making foreach on an IEnumerable allocation-free using reflection and dynamic methods – Andrew Lock
- What Burnout Taught Me About Sustainable Coding Practices – Aicha Laafia
- AI Makes Code Cheap. That’s Why Design Matters More 🎥 – CodeOpinion
- The Boolean Trick No C# Developer Knows About 🎥 – Nick Chapsas
- 2code ^ !2code [S2026E01] Inspector Roslyn says “Hello, World!” – Eva Ditzelmüller & Stefan Pölz
- ASP.NET Core Pitfalls – Content Type Mismatch – Ricardo Peres
- A Complete Guide to Converting Markdown to PDF in .NET C# – Bjoern Meyer
- Deterministic Voice Forms with Blazor and Local LLMs – Scott Galloway
- Type-Safe Collections in C#: How NonEmptyList Eliminates Runtime Exceptions – Ahmad Al-Freihat
- Code is a liability (not an asset) – Cory Doctorow
- Migrating NoSQL Databases: Real-World Lessons Learned – Felipe Cardeneti Mendes
- Blazor Basics: Should You Migrate to .NET 10? – Claudio Bernasconi
- Why I Use JetBrains Rider for .NET Development – Emanuele Bartolesi
- New in .NET 10 and C# 14: EF Core 10’s Faster Production Queries – Ali Hamza Ansari
- C# – F# Interop (2026 edition) – Urs Enzler
- Avoiding common pitfalls with async/await at NDC Copenhagen 🎥 – Stephen Cleary
- Future Proof with ASP.NET Core API Versioning at NDC Copenhagen 🎥 – Jay Harris
- Duende IdentityServer 7: A Complete Setup Guide for ASP.NET Core – Tore Nestenius
☕ Coffee Break
Take a break to catch some fun social posts.
🗞️ JetBrains News
What’s going on at JetBrains? Check it out here:
- How to Write Better AI Prompts as a Software Developer in 2026 🎥
- Rider 2025.3: Day-One Support for .NET 10 and C# 14, a New Default UI, and Faster Startup
- ReSharper and Rider 2025.3.2 Updates Out Now!
- Game Dev in 2025: Excerpts From the State of Game Development Report
- How We Made Variable Inspections 87 Times Faster for Unreal Engine in Rider
- ReSharper 2026.1 Early Access Program Has Begun
- Rider 2026.1 Early Access Program Is Now Open!
✉️ Comments? Questions? Send us an email.