C# features, testing, AI, and performance picks
24 curated .NET reads on C# features, unit testing, performance tuning, AI copilots, Azure, MAUI, and ASP.NET Core tips.
Jasen's top three picks
- 1 4 Different way to write a swap numbers program in C#
medium.com
A simple swap-numbers refresher, but it’s a nice warm-up before the more practical C# pieces.
- 2 How Event-Driven Architecture Boosts Scalability
csharp.com
Event-driven architecture gets a clear scalability treatment here, which is useful if you’re thinking beyond CRUD.
- 3 Mastering .NET Core: 20 Concepts Every Developer Should Know to Ace Their Next Interview Part-1
vsninja.medium.com
A broad .NET Core interview roundup; handy for juniors, or for a quick memory check.
Editor's note
I kept this issue varied on purpose, with a mix of practical C# articles, testing guidance, and a few AI and Azure pieces. The PGO and RecyclableMemoryStream reads are especially useful if you care about throughput and allocations, while the Copilot and MAUI items show where the platform is heading.
Today's articles
4 Different way to write a swap numbers program in C#
medium.com
https://medium.com/@dharmikginoya/4-different-way-to-write-a-swap-numbers-program-in-c-d5c1c0df1ac7
Topics: C#
Read articleHow Event-Driven Architecture Boosts Scalability
csharp.com
https://www.csharp.com/article/how-event-driven-architecture-boosts-scalability/
Topics: Azure Domain-Driven Design Event Sourcing
Read articleMastering .NET Core: 20 Concepts Every Developer Should Know to Ace Their Next Interview Part-1
vsninja.medium.com
https://vsninja.medium.com/mastering-net-core-20-concepts-every-developer-should-know-to-ace-their-next-interview-part-1-08d5e25d4fbf
Read articleComprehensive Guide to Unit Testing with MSTest in C#
c-sharpcorner.com
https://www.c-sharpcorner.com/article/comprehensive-guide-to-unit-testing-with-mstest-in-c-sharp/
Topics: Unit Testing xUnit.net
Read articleGitHub Launches Copilot Pro+
csharp.com
https://www.csharp.com/news/github-launches-copilot-pro
Topics: GitHub GitHub Copilot
Read articleProfile-Guided Optimization (PGO) in C#
c-sharpcorner.com
https://www.c-sharpcorner.com/article/profile-guided-optimization-pgo-in-c-sharp/
Topics: .NET 9 Performance
Read articleCopilot Slash Commands: The Copilot Show - Ep. 8
c-sharpcorner.com
https://www.c-sharpcorner.com/article/copilot-slash-commands-the-copilot-show-ep-8/
Topics: GitHub Copilot
Read articleIncorporating AI in SaaS and Cloud Platforms: A Business Perspective with Private Tailored Small Language Models
csharp.com
https://www.csharp.com/article/incorporating-ai-in-saas-and-cloud-platforms-a-business-perspective-with-privat/
Read articleUnit Test CRUD operation in Web API using NUnit Testing Framework
c-sharpcorner.com
https://www.c-sharpcorner.com/article/unit-test-crud-operation-in-web-api-using-nunit-testing-framework/
Topics: Unit Testing Web API
Read articleHave you heard about RecyclableMemoryStream in .NET?
medium.com
https://medium.com/@vikpoca/have-you-heard-about-recyclablememorystream-in-net-2f2617b39ae0
Topics: .NET Core Performance
Read articleC#’s Hidden Gems: 5 Underrated Features That Will Make You a Better Developer
medium.com
https://medium.com/@nagarajvela/c-s-hidden-gems-5-underrated-features-that-will-make-you-a-better-developer-9cbc1909e2fa
Topics: C#
Read articleBuilding a Generative AI Chatbot for Loan Accounting with .NET and Azure
medium.com
https://medium.com/younited-tech-blog/building-a-generative-ai-chatbot-for-loan-accounting-with-net-and-azure-058d73ccb0ea
Read articleLINQ vs TypeScript: Method Equivalents at a Glance
danielrusnok.medium.com
https://danielrusnok.medium.com/linq-vs-typescript-method-equivalents-at-a-glance-8be1bdcc279d
Read articleNew LINQ Features in .NET 9
c-sharpcorner.com
https://www.c-sharpcorner.com/article/new-linq-features-in-net-9/
Read articleC# 13: Introducing the new escape sequence
anthonygiretti.com
https://anthonygiretti.com/2025/03/07/c-13-introducing-the-new-escape-sequence/
Topics: C#
Read articleUnderstanding HashSet in C#
c-sharpcorner.com
https://www.c-sharpcorner.com/article/understanding-hashset-in-c-sharp/
Read articleMemory Leaks Due to Unmanaged Resources
medium.com
https://medium.com/dot-net-sql-learning/memory-leaks-due-to-unmanaged-resources-89e99780212d?source=rss------dotnet-5
Topics: .NET Core Performance
Read article10 Essential Development Tips for ASP.NET Core
c-sharpcorner.com
https://www.c-sharpcorner.com/article/10-essential-development-tips-for-asp-net-core/
Topics: ASP.NET Core .NET Core
Read articleException Handling with the 'is not' Operator
csharp.com
https://www.csharp.com/blogs/exception-handling-with-the-is-not-operator
Topics: C#
Read articleComprehensive and Advanced Guide to System.Environment in .NET 8/9
medium.com
https://medium.com/@anderson.buenogod/comprehensive-and-advanced-guide-to-system-environment-in-net-8-9-a65e162a2bed
Read articleC# 12 Inline Arrays vs Traditional Arrays: Why Performance-Critical Code Needs Them
medium.com
https://medium.com/asp-dotnet/c-12-inline-arrays-vs-traditional-arrays-why-performance-critical-code-needs-them-7d1c38a4f8ef
Topics: C# Performance
Read articleBest Practices for Azure Table Storage
c-sharpcorner.com
https://www.c-sharpcorner.com/article/best-practices-for-azure-table-storage/
Topics: Azure
Read article.NET MAUI Community Standup - Next in .NET 10 and Visual Studio
youtube.com
https://www.youtube.com/watch?v=WKqqdMmD6IA
Topics: .NET 10 .NET MAUI Visual Studio
Read articleAll You need to know about AutoMapper!
medium.com
https://medium.com/@deshanm123/all-you-need-to-know-about-automapper-b20ac6b4dff5
Topics: AutoMapper C#
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