Closed Hierarchies, Passkeys, Agents, gRPC
This issue spans C# 15 patterns, ASP.NET Core passkeys and OAuth mail, gRPC services, SqlClient retries, NuGet package limits, and AI agent tooling.
Jasen's top three picks
- 1 C# 15 Closed Hierarchies: Comparing Exhaustive Pattern Matching with Traditional Polymorphism
c-sharpcorner.com
Useful if you want to reason about when exhaustive matching clarifies intent better than classic virtual dispatch.
- 2 Send Gmail Emails from ASP.NET Core Using OAuth 2.0, Refresh Token and MailKit
c-sharpcorner.com
Good practical auth plumbing for teams that need Gmail SMTP without falling back to app passwords.
- 3 AI Integration in .NET
medium.com
Broad AI integration checklist: abstractions, observability, evaluation, and security all in one place.
Editor's note
I kept this one intentionally mixed, which is usually where the best newsletter issues land. The C# 15 closed hierarchies piece is a solid language-design discussion, and the NuGet package restrictions article is the kind of practical supply-chain hardening more teams should understand. I also liked the passkeys walkthrough because it explains the mechanics rather than stopping at a demo.
Today's articles
C# 15 Closed Hierarchies: Comparing Exhaustive Pattern Matching with Traditional Polymorphism
c-sharpcorner.com
Compare C# 15 closed hierarchies and exhaustive pattern matching with traditional polymorphism, including type safety, maintainability, and performance.
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Send Gmail Emails from ASP.NET Core Using OAuth 2.0, Refresh Token and MailKit
c-sharpcorner.com
Learn how to send Gmail emails from ASP.NET Core using Google OAuth 2.0, refresh tokens, MailKit, MimeKit, and Gmail SMTP without storing a Gmail password.
Topics: ASP.NET Core Authentication OAuth
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AI Integration in .NET
medium.com
How to use provider-neutral abstractions, structured outputs, tool calling, resilience, observability, evaluation, and secure application…
Topics: OpenAI OpenTelemetry Security
Read articleASP.NET Core 11 Static SSR: Measuring Performance and HTML Payload Size
c-sharpcorner.com
Benchmark ASP.NET Core 11 Static SSR to measure server performance, time to first byte, HTML payload size, and resource usage in web applications.
Topics: ASP.NET Core .NET 10 Performance
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ChatClient Middleware vs Agent Middleware in Microsoft Agent Framework: What I Learned After…
topuzas.medium.com
I ran into Jesse Liberty’s post on ChatClient middleware versus Agent middleware a couple of weeks ago, right when I was wiring up logging…
Topics: GitHub Copilot OpenAI Semantic Kernel
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Passkeys in ASP.NET Core 10
csharpdigest.net
how registration and sign-in actually work under the hood
Topics: ASP.NET Core Authentication Security
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Building a Real-Time Monitoring & Control Platform
medium.com
How I approached telemetry ingestion, UI responsiveness, licensing, and native desktop packaging for a real-time control platform for…
Topics: Application Insights Azure WPF
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The Best Guide On The Internet To Know About The Top 5 C# Projects - Simplilearn.com
simplilearn.com
The Best Guide On The Internet To Know About The Top 5 C# Projects Simplilearn.com
Topics: C#
Read articleHow to Build a gRPC Service in .NET from Scratch
c-sharpcorner.com
Learn how to build a gRPC service in .NET from scratch using Protocol Buffers, ASP.NET Core, dependency injection, repositories, generated clients, HTTP/2, and shared contracts for microservices.
Topics: ASP.NET Core gRPC Web API
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Try the new SqlClient and Retry connections natively
devblogs.microsoft.com
The 2002 release of the original .NET Framework shipped ADO.NET and System.Data.SqlClient, the driver for SQL Server that gave .NET applications a standard connection approach. Over the years, updates...
Topics: Azure .NET Framework SQL Server
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From dotnet run to Foundry Hosted Agent in 3 lines of C#
devblogs.microsoft.com
A couple of weeks ago I was talking with a couple of friends who are building agents with Microsoft Agent Framework. The demos were great, the agents were smart, everyone was happy. And then one of th...
Topics: Azure OpenAI Semantic Kernel
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Limit what NuGet packages can do in your project
meziantou.net
When you add a NuGet package to a project, you often think about the runtime library only. In reality, packages can also import MSBuild props/targets and Roslyn analyzers. Those assets run during rest...
Topics: GitHub Roslyn Security
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Your ASP.NET Core Endpoints Don't Have a Timeout
milanjovanovic.tech
ASP.NET Core doesn't enforce an application timeout on incoming requests by default. The built-in middleware can add one, but it only cancels RequestAborted.
Topics: ASP.NET Core Performance Web API
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