Copilot, performance, and AI templates
A varied .NET roundup with Visual Studio Copilot updates, .NET 9 speed tips, C# 14, MAUI, Blazor, EF Core, and AI templates.
Jasen's top three picks
- 1 GitHub Copilot Highlights in Visual Studio 17.14 Preview 3 (Available Now)
Microsoft Dev Blogs
Copilot gets a meaningful Visual Studio bump here.
- 2 C# Strings + Random = A Job Title Generator You Didn’t Know You Needed
Medium
A nice cluster of performance reads for folks chasing allocations and throughput.
- 3 .NET 9 Apps Are Faster Than Ever
C# Corner
The .NET AI Template preview is the most forward-looking item in the mix.
Editor's note
I pulled together a deliberately mixed lineup today: tooling, performance, UI, and a little AI. The Visual Studio Copilot preview and the new .NET AI Template preview stood out because they show where the ecosystem is heading right now. I also like the Span and memory pieces for the practical side—they’re the kind of posts that still save real time on real projects.
Today's articles
GitHub Copilot Highlights in Visual Studio 17.14 Preview 3 (Available Now)
Microsoft Dev Blogs
https://devblogs.microsoft.com/visualstudio/github-copilot-highlights-in-visual-studio-17-14-preview-3-available-now/
Topics: GitHub Copilot Visual Studio
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C# Strings + Random = A Job Title Generator You Didn’t Know You Needed
Medium
https://medium.com/@fulton_shaun/c-strings-random-a-job-title-generator-you-didnt-know-you-needed-b040ecdd9d00
Topics: C# Performance
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.NET 9 Apps Are Faster Than Ever
C# Corner
https://www.c-sharpcorner.com/article/net-9-apps-are-faster-than-ever/
Topics: .NET 9 Performance
Read articleMastering the New Era of C#: Exploring Advanced Features in C# 14
C# Corner
https://www.c-sharpcorner.com/article/mastering-the-new-era-of-c-sharp-exploring-advanced-features-in-c-sharp-14/
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Csv-CSharp — Extremely fast CSV parser for .NET / Unity
Medium
https://nuskey.medium.com/csv-csharp-extremely-fast-csv-parser-for-net-unity-db1aac71af29
Topics: .NET Core Performance
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C#’s Dirty Little Secret: How Span Obliterates Arrays in Performance
Medium
https://medium.com/@nagarajvela/c-s-dirty-little-secret-how-span-t-obliterates-arrays-in-performance-6cf05071dede
Topics: C# Performance
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What is MVC Routing in .NET?
Medium
https://medium.com/@chikeredev/what-is-mvc-routing-in-net-2884ea4bc369?source=rss------csharp-5
Topics: ASP.NET Core .NET Framework
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Why 90% of .NET Devs Still Get Concurrency Wrong
Medium
https://medium.com/turbo-net/why-90-of-net-devs-still-get-concurrency-wrong-6bbef93a75f7
Topics: C# Performance
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Preview 2 of the .NET AI Template Now Available
Microsoft Dev Blogs
https://devblogs.microsoft.com/dotnet/announcing-dotnet-ai-template-preview2/
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C# in the Browser: Blazor vs JavaScript — A Full Stack Experiment
Medium
https://medium.com/@nagarajvela/c-in-the-browser-blazor-vs-javascript-a-full-stack-experiment-0456649c7f49
Read articleMastering Git Branch Management
C# Corner
https://www.c-sharpcorner.com/blogs/mastering-git-branch-management
Topics: Azure DevOps GitHub
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Memory Mastery: How to Slash Allocations in High-Performance C#
Medium
https://medium.com/@nagarajvela/memory-t-mastery-how-to-slash-allocations-in-high-performance-c-e1e14d7b78bf
Topics: C# Performance
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Beyond the Code: How .NET is Quietly Shaping the Future of Software
Medium
https://medium.com/@Adem_Korkmaz/beyond-the-code-how-net-is-quietly-shaping-the-future-of-software-3ed40c810cc7
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.NET 10 Preview 3 - .NET APIs Get Validation, Server-Sent Events (SSE), and more!
YouTube
https://www.youtube.com/watch?v=96lKoqQXbf4
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Dependency Inversion - SOLID
Medium
https://medium.com/@yilmaz.my/dependency-inversion-solid-08534a2da6be
Topics: C# Solid Principles
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Why .NET 9 Apps Are Faster Than Ever(How to Take Full Advantage)
itnext.io
https://itnext.io/why-net-9-apps-are-faster-than-ever-how-to-take-full-advantage-47462879085d
Topics: .NET 9 Performance
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Mastering Entity Framework Core (EF Core) Part 2
Medium
https://medium.com/@circuitstocode/mastering-entity-framework-core-ef-core-part-2-9bd9b52fcd01
Read article
.NET Project Created But No .csproj File? Here's What You Need to Know
Medium
https://medium.com/dot-net-sql-learning/net-project-created-but-no-csproj-file-heres-what-you-need-to-know-4df5f2070685
Read articleAsynchronously Grouping Totals in MAUI [GamesCatalog] - Part 13
C# Corner
https://www.c-sharpcorner.com/article/asynchronously-grouping-totals-in-maui-gamescatalog-part-13/
Topics: .NET MAUI Performance
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Introduction to the C# SDK for Model Context Protocol (MCP)
YouTube
https://www.youtube.com/watch?v=krB1aA9xpts
Topics: OpenAI Semantic Kernel
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VSCode Extensions for Developers in 2025 (C#, Angular, React)
Medium
https://medium.com/@Adem_Korkmaz/vscode-extensions-for-developers-in-2025-c-angular-react-0d3c793aea6d
Topics: C# Visual Studio Code
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The .NET 2025 Evolution: What Senior Developers Must Know Now
Medium
https://medium.com/asp-dotnet/the-net-2025-evolution-what-senior-developers-must-know-now-550e11672e7e
Read articleHow to Fix Coding Errors with Copilot
C# Corner
https://www.c-sharpcorner.com/article/how-to-fix-coding-errors-with-copilot/
Topics: C# GitHub Copilot
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Mastering .NET MAUI: Best Practices for High-Performance Applications
Medium
https://medium.com/@consulting_44298/mastering-net-maui-best-practices-for-high-performance-applications-7d5a434c97de
Topics: .NET MAUI Performance
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