トピックス
The history of C# and TypeScript with Anders Hejlsberg | GitHub
https://www.youtube.com/watch?v=uMqx8NNT4xY
Announcing winapp, the Windows App Development CLI
ReSharper and Rider 2025.3.2 Updates Out Now! | The .NET Tools Blog
https://blog.jetbrains.com/dotnet/2026/01/29/resharper-and-rider-2025-3-2/
Visual Studio January Update — Enhanced Editor Experience - Visual Studio Blog
https://devblogs.microsoft.com/visualstudio/visual-studio-january-update-enhanced-editor-experience/
.NET AI Essentials - The Core Building Blocks Explained - .NET Blog
https://devblogs.microsoft.com/dotnet/dotnet-ai-essentials-the-core-building-blocks-explained/
Rider 2026.1 Early Access Program Is Now Open! | The .NET Tools Blog
https://blog.jetbrains.com/dotnet/2026/01/22/rider-2026-1-early-access-program-start/
ReSharper 2026.1 Early Access Program Has Begun | The .NET Tools Blog
https://blog.jetbrains.com/dotnet/2026/01/22/resharper-2026-1-early-access-program/
リリース
- aws/aws-sdk-net
- Azure/azure-cosmos-dotnet-v3
- Azure/azure-sdk-for-net
- CommunityToolkit/Maui
- DataDog/dd-trace-dotnet
- domaindrivendev/Swashbuckle.AspNetCore
- googleapis/google-cloud-dotnet
- newrelic/newrelic-dotnet-agent
- open-telemetry/opentelemetry-dotnet-contrib
アーティクル、スライドなど
microsoft/dcp: Developer Control Plane API server and CLI.
https://github.com/microsoft/dcp
New in .NET 10 and C# 14: Multi-Tenant Rate Limiting
https://blog.elmah.io/new-in-net-10-and-c-14-multi-tenant-rate-limiting/
WebアクセシビリティをCI/CDで担保する ― axe DevTools × Playwright C#実践ガイド
https://zenn.dev/tomokusaba/articles/035e696351e16d
Use client assertions in ASP.NET Core using OpenID Connect, OAuth DPoP and OAuth PAR
C#erとして考える、モダンC#/.NETの2026年始の現在地とLLM時代の課題
https://zenn.dev/nossa/articles/12591dab29df30
ローカルとNuGetパッケージの処理を同時にベンチマーク実行する方法
https://zenn.dev/prozolic/articles/4ecb9bd1d931d7
MassTransit で実現するイベント駆動アーキテクチャ
https://zenn.dev/pksha/articles/18e25967d45855
Working around dotnet-trace's 100 stack frame limit
https://dfamonteiro.com/posts/dotnet-trace-100-limit/
Using FusionCache's Backplane to synchronize HybridCache instances across multiple instances
https://timdeschryver.dev/blog/hybridcache-sync-with-fusioncache-backplane
Game Dev in 2025: Excerpts From the State of Game Development Report | The .NET Tools Blog
LLM の動き〜HTTPパケット確認〜
https://zenn.dev/yy7613/articles/b9c1de0c2f2616
Cursorの新機能「Debug Mode」はレガシーコードの救世主になるか？ C# WinFormsで検証してみた
https://zenn.dev/nexta_/articles/38f5e7fb61f4ab
C#でMCP入門（NEWS API連携編）- 書籍『MCP入門』のPythonコードを移植する(5)
https://zenn.dev/zead/articles/mcp-learning-5
Aspire 13でdocker compose生成機能を試してみる
https://zenn.dev/arika/articles/20260124-aspire-docker-compose-integration
Source Generator Tips(#1): コード整形にIndentStringBuilderを使う
https://zenn.dev/arika/articles/20260201-source-generator-use-indentbuilder
Diagnosing performance issues in .NET applications with dotnet-trace and Perfetto
https://dfamonteiro.com/posts/using-dotnet-trace-with-perfetto/
Join Microsoft at NDC London 2026 - Let’s Build the Future of .NET Together - .NET Blog
https://devblogs.microsoft.com/dotnet/join-us-at-ndc-london-2026/
Creating and consuming metrics with System.Diagnostics.Metrics APIs: System.Diagnostics.Metrics APIs - Part 1
https://andrewlock.net/creating-and-consuming-metrics-with-system-diagnostics-metrics-apis/
EF Core Lazy Loading Performance Gotcha
https://markheath.net/post/2026/1/8/efcore-lazy-loader-gotcha
Writing a .NET Garbage Collector in C# - Part 6: Mark and Sweep
https://minidump.net/writing-a-net-gc-in-c-part-6/