トピックス
.NET and .NET Framework December 2025 servicing releases updates - .NET Blog
https://devblogs.microsoft.com/dotnet/dotnet-and-dotnet-framework-december-2025-servicing-updates/
December Update 18.1.0 - Visual Studio 2026 Release Notes
https://learn.microsoft.com/en-us/visualstudio/releases/2026/release-notes#december-update-1810
.NET 10 Networking Improvements - .NET Blog
https://devblogs.microsoft.com/dotnet/dotnet-10-networking-improvements/
Introducing Data Ingestion Building Blocks (Preview) - .NET Blog
https://devblogs.microsoft.com/dotnet/introducing-data-ingestion-building-blocks-preview/
.NET Conf 2025 Recap - Celebrating .NET 10, Visual Studio 2026, AI, Community, & More - .NET Blog
https://devblogs.microsoft.com/dotnet/dotnet-conf-2025-recap/
Visual Studio November Update – Visual Studio 2026, Cloud Agent Preview, and more - Visual Studio Blog
リリース
- aws/aws-sdk-net
- Azure/azure-sdk-for-net
- DataDog/dd-trace-dotnet
- dotnet/aspire
- dotnet/command-line-api
- googleapis/google-cloud-dotnet
- Google.Cloud.AIPlatform.V1-3.58.0, Google.Cloud.CloudBuild.V1-2.18.0, Google.Cloud.Compute.V1-3.20.0, Google.Cloud.Datastore.V1-5.0.0, Google.Cloud.Eventarc.V1-2.9.0, Google.Cloud.Firestore-4.0.0, Google.Cloud.Firestore-4.1.0, Google.Cloud.GkeMultiCloud.V1-2.10.0, Google.Cloud.NetApp.V1-1.13.0, Google.Cloud.Parallelstore.V1-1.3.0, Google.Cloud.Run.V2-2.18.0, Google.Cloud.Spanner-5.8.0, Google.Shopping.Merchant.Accounts.V1-1.4.0
- LuckyPennySoftware/AutoMapper
- LuckyPennySoftware/MediatR
- microsoft/CsWin32
- newrelic/newrelic-dotnet-agent
- unoplatform/uno
アーティクル、スライドなど
Why changing keyboard shortcuts in Visual Studio isn’t as simple as it seems - Visual Studio Blog
Trying out the Zed editor on Windows for .NET and Markdown
https://andrewlock.net/trying-out-the-zed-editor-on-windows-for-dotnet-and-markdown/
C#開発者向け .editorconfigでAI生成コードを整形 - Visual Studioでの実践ガイド
https://zenn.dev/nexta_/articles/editorconfig-csharp-visualstudio
プリザンターのサーバスクリプトでC#スクリプトがつかえるようにしてみる - Qiita
https://qiita.com/pmc-ko/items/10da2daf9417441ed759
.NET 10 WinForms/WPF で 共通のグローバル例外ログ基盤を C# と log4net で実装する
https://zenn.dev/tazzae999jp/articles/7e37b2b2d9d2a6
ブラウザの中にサーバーを、Hono Service Worker Adapter + Wasmで実現する真のスタンドアロンなVOICEVOX
https://zenn.dev/yamachu/articles/e6fc24d8104e9e
Streamlining your Git workflow with Visual Studio 2026 - Visual Studio Blog
https://devblogs.microsoft.com/visualstudio/streamlining-your-git-workflow-with-visual-studio-2026/
# 挙動そのままにパフォーマンス改善?!Blazorパフォーマンス改善手法のすすめ - Qiita
https://qiita.com/nanagami1369/items/9e4524714ffcf60b93c8
Implementing Cross-Platform In-App Billing in .NET MAUI Applications - .NET Blog
https://devblogs.microsoft.com/dotnet/cross-platform-billing-dotnet-maui/
Microsoft Learn MCP Server Elevates Development - .NET Blog
https://devblogs.microsoft.com/dotnet/microsoft-learn-mcp-server-elevates-development/
How .NET 10.0 boosted AIS.NET performance by 7% | endjin
https://endjin.com/blog/2025/12/how-dotnet-10-boosted-ais-dotnet-performance-by-7-percent-for-free
Using Strategy Pattern with Dependency Injection in ASP.NET Core
https://blog.elmah.io/using-strategy-pattern-with-dependency-injection-in-asp-net-core/
MVVMの論点 - Qiita
https://qiita.com/hiro_t/items/9b8d3e3804086eb696ce
.NET Framework のArray.Sort,よく分かんないけどなんか分かった! - Qiita
https://qiita.com/TETSURO1999/items/822c71e3d577866d17ba
microCMS が意外と C# と相性良かった件【WinFormsでAPI連携】 - Qiita
https://qiita.com/Sakai_path/items/9439e0a28abe9ef203b1
C#でのWebView2の使い方メモ - Qiita
https://qiita.com/unalion/items/6de5c5994329f0955ec5
Source Generatorsを調べてみた
https://zenn.dev/mfujimoto/articles/source_generator
New Winamp interface made 100% with AI and Uno Platform tools
https://dev.to/archiecoderdev/new-winamp-interface-made-100-with-ai-and-uno-platform-tools-5c53
Ubuntu 環境に .NET 10 をインストールしてみた (+ エラーの対応方法) - Qiita
https://qiita.com/Lemon73/items/d557193fcc35117d4872
Creating a custom MSBuild SDK to reduce boilerplate in .NET projects - Gérald Barré
https://www.meziantou.net/creating-a-custom-msbuild-sdk-to-reduce-boilerplate-in-dotnet-projects.htm
.NET NativeAOT on AWS Lambda: 7 Faster Cold Starts, 73% Lower Costs
https://dev.to/whitewaw/net-nativeaot-on-aws-lambda-7x-faster-cold-starts-73-lower-costs-np3
異色の組み合わせ?! Tauri + Blazor を試してみた! - Qiita
https://qiita.com/Lemon73/items/9afb3db113753d50b221
Unlocking the Power of Web with Copilot Chat’s New URL Context - Visual Studio Blog
【C#/.NET】Microsoft Agent Framework による AIエージェント開発 チュートリアル
https://zenn.dev/fujiwo/articles/c219663fe85db9
.NET MAUI 10 の新機能を見ていく - Qiita
https://qiita.com/Lemon73/items/595ec68543890a760231
5 Stories Of Developers Using JetBrains Rider to Create, Collaborate, and Have Fun | The .NET Tools Blog
https://blog.jetbrains.com/dotnet/2025/12/03/5-stories-of-developers-using-jetbrains-rider/
dotInsights | December 2025 | The .NET Tools Blog
https://blog.jetbrains.com/dotnet/2025/12/02/dotinsights-december-2025/
リストビュー的なコントロールの特徴まとめ(WinUI 3)
https://zenn.dev/shinta0806/articles/listview-controls
Recent updates to NetEscapades.EnumGenerators: [EnumMember] support, analyzers, and bug fixes
https://andrewlock.net/recent-updates-to-netescapaades-enumgenerators/
[.NET 10] .NET MAUI を GitHub Actions で自動ビルド - Qiita
https://qiita.com/Lemon73/items/540b0a95207399a9be67
【C#】VSで使用できる機能_インタラクティブ編 - Qiita
https://qiita.com/KM_20005/items/a794f6dd13771bfcd067
.NET MAUI on Linux のサンプルを動かしてみる - Qiita
https://qiita.com/Lemon73/items/8a3b47ced9c3d062de87
プリザンターを.NET 8から.NET 10に移行してみる - Qiita
https://qiita.com/pmc-ko/items/60dd56bbd1446c74ad23
cspsc - 実はプリンタは計算機だったのかもしれない - Qiita
https://qiita.com/tmyt/items/994d1552497dd5202aa4
Milk-V Duo 256Mで.NETを動かした話を登壇しました
https://zenn.dev/matsujirushi/articles/733d84d39775f7
開発者にスポットライトを当てる GitHub 貢献ダッシュボードを作った話
https://zenn.dev/yutakaosada/articles/ed03db1ef55124
Cross-Platform Age Verification in .NET MAUI Applications - .NET Blog
https://devblogs.microsoft.com/dotnet/cross-platform-age-verification-dotnet-maui/
Profiler Agent - Delegate the analysis, not the performance - Visual Studio Blog
https://devblogs.microsoft.com/visualstudio/delegate-the-analysis-not-the-performance/
.NET Conf 2025 Tokyo Osaka Fukuoka (2025/12/20 13:00〜)
https://dotnetlab.connpass.com/event/371159/
【C#】Visual Studioの診断ツールを使いこなして.NETアプリのパフォーマンスを改善する - Qiita
https://qiita.com/KM_20005/items/f5d3bbf8ff18fe4e6643
What’s New in ASP.NET Core 10 for .NET 10: Key Features and Enhancements
https://www.syncfusion.com/blogs/post/whats-new-aspdotnet-core-10-in-net-10
Announcing OData .NET (ODL) 9 Preview 3 Release - OData
https://devblogs.microsoft.com/odata/announcing-odata-net-odl-9-preview-3-release/
クラス間の依存関係のリストアップ - Qiita
https://qiita.com/sh126sh125/items/006f9135292bd9346f17
SONY CDリピーターのディスク解析とエミュレーター開発 - Qiita
https://qiita.com/shotacure/items/8040ea0fa79dee2e567b
AWS Transform announces full-stack Windows modernization capabilities | Amazon Web Services
Automatically Signing a Windows EXE with Azure Trusted Signing, dotnet sign, and GitHub Actions
【C#】.NET 10 のパフォーマンス改善 - ねののお庭。
https://blog.neno.dev/entry/2025/12/02/122553
.NET 10のEntity Framework Coreの新機能
https://zenn.dev/poipoionigiri/articles/df16dbcb6fd1aa
ライブラリ、リポジトリ、ツールなど
GitHub - smynudop/Itaiji
https://github.com/smynudop/Itaiji
tobitege/Flowery.NET: Beautiful DaisyUI-styled components for Avalonia UI in C#
https://github.com/tobitege/Flowery.NET?tab=readme-ov-file
Linqraft - On-demand DTO and Expression Tree Generation
https://arika0093.github.io/Linqraft/
ツイート
Amazing! Free Code Signing for Open Source software https://t.co/skIKWG9tYW
— Scott Hanselman 🌮 (@shanselman) December 1, 2025
You can now play around with the TOON language in Visual Studio with this handy extension https://t.co/hRLNMCDWMa
— Mads Kristensen (@mkristensen) December 1, 2025