C# 14, Web APIs, and observability
A mixed .NET roundup with C# 14 language updates, ASP.NET Core API guidance, CQRS messaging, OpenTelemetry, DI, and interview prep.
Jasen's top three picks
- 1 C# 14 Extension Members Guide: Static and Instance Properties in .NET 10
levelup.gitconnected.com
C# 14 extension members are the headline feature here, and the .NET 10 angle makes it especially timely.
- 2 The Single Responsibility Principle, Demystified
levelup.gitconnected.com
A nice plain-English refresher on SRP for anyone cleaning up code that’s grown a few too many reasons to change.
- 3 .NET Core Web API Features with Code Examples
c-sharpcorner.com
Wolverine + CQRS is a useful combo if you’re evaluating messaging without jumping straight to heavy frameworks.
Editor's note
I curated a fairly wide mix today: language features, architecture, API work, AI tooling, and observability. The C# 14 extension members write-up and the OpenTelemetry + Grafana piece stood out because they’re both practical and clearly tied to what teams are shipping now. I also liked the CQRS/Wolverine article for readers thinking beyond CRUD, even if this issue stays deliberately varied.
Today's articles
C# 14 Extension Members Guide: Static and Instance Properties in .NET 10
levelup.gitconnected.com
https://levelup.gitconnected.com/c-14-extension-members-guide-static-and-instance-properties-in-net-10-3392e1379986
Read articleThe Single Responsibility Principle, Demystified
levelup.gitconnected.com
https://levelup.gitconnected.com/the-single-responsibility-principle-demystified-e437a2454625
Topics: Design Patterns Solid Principles
Read article.NET Core Web API Features with Code Examples
c-sharpcorner.com
https://www.c-sharpcorner.com/article/net-core-web-api-features-with-code-examples/
Topics: ASP.NET Core Web API
Read articlePage Object Model Design Pattern: Benefits and Implementation
c-sharpcorner.com
https://www.c-sharpcorner.com/article/page-object-model-design-pattern-benefits-and-implementation/
Topics: Design Patterns Test-Driven Development
Read articleThinking at Scale: Why GSCP Is the Corporate Standard for Safe, Smart AI
c-sharpcorner.com
https://www.c-sharpcorner.com/article/thinking-at-scale-why-gscp-is-the-corporate-standard-for-safe-smart-ai/
Topics: GitHub Copilot OpenAI
Read articleHow to Deploy Copilot Agents Using Copilot Studio – Step-by-Step for Beginners
c-sharpcorner.com
https://www.c-sharpcorner.com/article/how-to-deploy-copilot-agents-using-copilot-studio-step-by-step-for-beginners/
Topics: GitHub Copilot OpenAI
Read articleHow to Read QR Codes in C# Using IronQR
medium.com
https://medium.com/@kyesstuart/how-to-read-qr-codes-in-c-using-ironqr-767904120afc
Topics: C# Performance
Read articleBasic AI Application Creation for Beginner Using Javascript and Visial Studio Code - Chat GPT
c-sharpcorner.com
https://www.c-sharpcorner.com/article/basic-ai-application-creation-for-beginner-using-javascript-and-visial-studio-co/
Topics: GitHub Copilot OpenAI
Read articleHow to inject services in ASP.NET Core dependency injection
roundthecode.com
https://www.roundthecode.com/dotnet-tutorials/how-to-inject-services-asp-net-core-dependency-injection
Topics: ASP.NET Core Design Patterns
Read articleModern CQRS and Messaging in .NET with Wolverine
c-sharpcorner.com
https://www.c-sharpcorner.com/article/modern-cqrs-and-messaging-in-net-with-wolverine2/
Read articleC# Generics & Constraints: The Feature I Ignored Until It Bit Me
blog.stackademic.com
https://blog.stackademic.com/c-generics-constraints-the-feature-i-ignored-until-it-bit-me-bcb47dcae5dd
Read articleTop 10 abstract Keyword Errors in C# and How to Fix Them Like a Pro
medium.com
https://medium.com/@ashokreddy343/top-10-abstract-keyword-errors-in-c-and-how-to-fix-them-like-a-pro-1d455bde3141
Read articleWhat is Strings and Dictionaries
c-sharpcorner.com
https://www.c-sharpcorner.com/article/what-is-strings-and-dictionaries/
Read articleWhat’s New in C# 14: Extension Members, Backing Fields, and Null-Conditional Assignments
tomaszs2.medium.com
https://tomaszs2.medium.com/whats-new-in-c-14-extension-members-backing-fields-and-null-conditional-assignments-4dfc244a2f90
Read articleC# in 2025: CRUD Is Dead, Long Live Events and Intents
medium.com
https://medium.com/@mohsho10/c-in-2025-crud-is-dead-long-live-events-and-intents-8c620db7b58a
Read articleModern Observability in .NET: OpenTelemetry & Grafana
medium.com
https://medium.com/@Adem_Korkmaz/modern-observability-in-net-opentelemetry-grafana-4c08b9d74240
Topics: OpenTelemetry Performance
Read article🔴 VS Code Live: The Open Source AI Editor
youtube.com
https://www.youtube.com/watch?v=ATYf63Sbns8
Topics: GitHub Copilot Visual Studio Code
Read articleSenior C# .NET Developer — Mock Interview Plan with Sample Questions and Answers
medium.com
https://medium.com/@pmmanav/senior-c-net-developer-mock-interview-plan-with-sample-questions-and-answers-02064b97ffce
Read article