2026-05-08: .NET 10.0.7 OoB Update, Aspire 13.3, Windows App SDK 2.0

Published on Friday, 08 May 2026

トピックス

.NET 10.0.7 Out-of-Band Security Update - .NET Blog

https://devblogs.microsoft.com/dotnet/dotnet-10-0-7-oob-security-update/

What's New in Aspire 13.3 | Aspire Blog

https://devblogs.microsoft.com/aspire/whats-new-aspire-13-3/

Windows App SDK 2.0 release notes - Windows apps

https://learn.microsoft.com/en-us/windows/apps/windows-app-sdk/release-notes/windows-app-sdk-2-0?pivots=stable

VSTest is Removing its Newtonsoft.Json Dependency - .NET Blog

https://devblogs.microsoft.com/dotnet/vs-test-is-removing-its-newtonsoft-json-dependency/

Visual Studio April Update – Cloud Agent Integration - Visual Studio Blog

https://devblogs.microsoft.com/visualstudio/visual-studio-april-update-cloud-agent-integration/

Copilot Studio gets faster with .NET 10 on WebAssembly - .NET Blog

https://devblogs.microsoft.com/dotnet/copilot-studio-dotnet-10-migration/

Welcome to SkiaSharp 4.0 Preview 1 - .NET Blog

https://devblogs.microsoft.com/dotnet/welcome-to-skia-sharp-40-preview1/

What's new for .NET in Ubuntu 26.04 - .NET Blog

https://devblogs.microsoft.com/dotnet/whats-new-for-dotnet-in-ubuntu-2604/

Announcing the WinApp VS Code Extension — Run, Debug, and Package Windows Apps in VS Code - #ifdef Windows

https://devblogs.microsoft.com/ifdef-windows/announcing-the-winapp-vs-code-extension-run-debug-and-package-windows-apps-in-vs-code/

https://devblogs.microsoft.com/ifdef-windows/announcing-winui-3-gallery-2-9/

TypeScript 7 Beta Now Enabled by Default in Visual Studio 2026 18.6 Insiders 3 - Visual Studio Blog

https://devblogs.microsoft.com/visualstudio/typescript-7-beta-now-enabled-by-default-in-visual-studio-2026-18-6-insiders-3/

Governing MCP tool calls in .NET with the Agent Governance Toolkit - .NET Blog

https://devblogs.microsoft.com/dotnet/governing-mcp-tool-calls-in-dotnet-with-the-agent-governance-toolkit/

SDK-Style Support for Extension Projects - Visual Studio Blog

https://devblogs.microsoft.com/visualstudio/sdk-style-support-for-extension-projects/

リリース

アーティクル、スライドなど

C#はドコで使われているの? 2026

https://zenn.dev/inuinu/articles/where-is-csharp-used-2026

LM Studio とローカルLLMで理解する Microsoft Agent Framework ハーネスの仕組みと実行フロー

https://zenn.dev/yy7613/articles/74265daaf7929a

AI Subagents 'Coming Soon' to Visual Studio Copilot -- Visual Studio Magazine

https://visualstudiomagazine.com/articles/2026/05/06/ai-subagents-coming-to-visual-studio-ides-copilot.aspx

Durable Workflows in the Microsoft Agent Framework - .NET Blog

https://devblogs.microsoft.com/dotnet/durable-workflows-in-microsoft-agent-framework/

Microsoft Agent Framework をローカルLLMで試してみる その13(ミドルウェア)

https://zenn.dev/yy7613/articles/bb5fa8cdb6bf64

Microsoft Agent Framework - Building Blocks for AI Part 3 - .NET Blog

https://devblogs.microsoft.com/dotnet/microsoft-agent-framework-building-blocks-for-ai-part-3/

enum のバインド

https://zenn.dev/shinta0806/articles/enum-binding

Blazor WebAssembly で作るエンジニア診断アプリ ー ローカライズ・GA・Cookie同意まで実装した話

https://zenn.dev/nekojoker/articles/c9f17b69690031

【C#】CSharpierのすすめ

https://zenn.dev/nuskey/articles/csharpier-is-good

https://duendesoftware.com/blog/20260429-aspnet-core-cookie-size-limits

WPF UI に憧れたけれど、最終的に .NET MAUI Blazor Hybrid に戻ってきた話 - Qiita

https://qiita.com/maki_s/items/527469f0ff9fa94cefb2

.NETでOpenAI APIを使い倒すキホン - Qiita

https://qiita.com/qOpenDev/items/fc3ca29355956c1d0381

.NETパッケージをNuGetにAPI経由でアップロードする方法

https://zenn.dev/loach/articles/upload-nuget

圏論を SQL と LINQ で説明してみる - Qiita

https://qiita.com/yaju/items/38a283f4b1fba434f620

【Blazor + Syncfusion】業務アプリの一覧画面をSfGrid中心に実装して感じたこと - Qiita

https://qiita.com/af-dev-hub/items/79eb00a4306a01a2a12f

【Raspberry Pi 5】AntigravityからリモートSSH接続してC#開発

https://zenn.dev/minenote/articles/2c93232bab8b61

キャッシュ戦略の徹底比較～Lazyキャッシュを中心に～ - Qiita

https://qiita.com/Mitsuki0003/items/260d0f64cdc580de181c

.NET コード生成テンプレートで試す複数エージェント開発ループ

https://zenn.dev/tomokusaba/articles/14f2373c51e1f2

Evaluating CRON and RRule expressions in .NET - Gérald Barré

https://www.meziantou.net/evaluating-cron-and-rrule-expressions-in-dotnet.htm

Pick and Omit in C# with Facet .NET: TypeScript Utility Types for .NET

https://tim-maes.com/blog/2026/04/17/pick-and-omit-in-csharp-with-facet/

【.NET 11 Preview 3】ファイルベースアプリのファイル分割

https://zenn.dev/prozolic/articles/a861cc1da6b0e1

ZStringを読もう(4) buffer - Qiita

https://qiita.com/kuto110/items/75c0336a25c6d0afd1af

System.CommandLine 安定版リリース - Qiita

https://qiita.com/KM_20005/items/94d1db2f49c7436d598b

C#: 一度しか呼ばれないActionを自動でプールする

https://zenn.dev/ruccho/articles/csharp-pooled-actions

Building an AI-Powered Conference App with .NET's Composable AI Stack - .NET Blog

https://devblogs.microsoft.com/dotnet/building-ai-conference-app-dotnet-composable-stack/

Microsoft Agent FrameworkをローカルLLMで試してみる その12(Structured Output)

https://zenn.dev/yy7613/articles/27d7ed3c97ff1a

Union型パフォーマンス比較: Non Boxingなカスタムユニオンの場合【C#15 preview】

https://zenn.dev/inuinu/articles/csharp-union-performance

Microsoft Agent FrameworkをローカルLLMで試してみる その11(AIContextProviderで簡易RAG)

https://zenn.dev/yy7613/articles/d5b22b11d40fca

High-Performance Distributed Caching with .NET and Postgres on Azure - .NET Blog

https://devblogs.microsoft.com/dotnet/high-performance-distributed-caching-dotnet-postgres-azure/

WindowsFormsでMVVMをやろうとして自己満足で終わった話と、.NET 10ならこう書ける話 - Qiita

https://qiita.com/inuta-one/items/4cb48340bdfe32b15592

Combining API versioning with OpenAPI in .NET 10 applications - .NET Blog

https://devblogs.microsoft.com/dotnet/api-versioning-in-dotnet-10-applications/

最近使っている GitHub Copilot CLI + .NET 向けのカスタムエージェントとスキル

https://zenn.dev/microsoft/articles/github-copilot-dotnet-project

Entra Verified ID 発行実装編：.NET サンプルで作るデジタル社員証 API

https://zenn.dev/kumaik/articles/entra-verified-id-dotnet-issuance

Windows App Development CLI v0.3: new run and ui commands, plus dotnet run support for packaged apps - #ifdef Windows

https://devblogs.microsoft.com/ifdef-windows/windows-app-development-cli-v0-3-new-run-and-ui-commands-plus-dotnet-run-support-for-packaged-apps/

初めてClaude Designを使ってBlazorアプリのデフォルトUIをリデザインしてみた - Qiita

https://qiita.com/non-k/items/bcc3cf14e072b74ae730

【C#】例外とログを深く考える：第1回 Exceptionクラスの全解剖 - Qiita

https://qiita.com/KM_20005/items/eab8ab1db5ab28d9164e

【C#】C# Dev Kitが生成する.lscacheファイルについて

https://zenn.dev/nuskey/articles/csharp-lscache

C# 開発者のための GitHub Copilot CLI と VS Code Agent Mode の使い分け

https://zenn.dev/tomokusaba/articles/838cdac8d71e52

Removing byte[] allocations in .NET Framework using ReadOnlySpanT

https://andrewlock.net/removingbyte-array-allocations-in-dotnet-framework-using-readonlyspan-t/

Microsoft 365 Agents SDK の AgentApplication クラスを継承しない書き方について

https://zenn.dev/karamem0/articles/2026_04_21_090000

mruby on C#: From VM Implementation to Game Scripting (RubyKaigi 2026)

https://speakerdeck.com/hadashia/mruby-on-c-number-from-vm-implementation-to-game-scripting

ライブラリ、リポジトリ、ツールなど

r-dev95/OpRec

https://github.com/r-dev95/OpRec

ulex/windows_defender_performance_tool: Real-time Windows Defender scan performance monitor

https://github.com/ulex/windows_defender_performance_tool

akeit0/Enaga: Experimental C# project for rendering html/css (and browser) or ReactNative directly.

https://github.com/akeit0/Enaga

ツイート