Add 2026-05-27.md

Author: mayuki

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+---
+Title: "2026-05-27: Improving C# Memory Safety, C# Kaigi 2026, Visual Studio May Update"
+Published: 2026/05/27 00:00
+DestinationPath: 2026/05/27/updates.html
+---
+<!--
+# yyyy-MM-dd
+## 主なトピックス
+## ヘッドライン
+## アーティクル、スライドなど
+## ライブラリ、リポジトリ、ツールなど
+## サイト、ドキュメントなど
+### ツイート
+## Deep Dive
+-->
+
+## トピックス
+### Improving C# Memory Safety - .NET Blog
+https://devblogs.microsoft.com/dotnet/improving-csharp-memory-safety/
+
+### C# Kaigi 2026 | 公式サイト
+https://csharpkaigi.net/
+
+- [C# Kaigi 2026 (2026/09/19 11:00〜)](https://csharpkaigi.connpass.com/event/394163/)
+
+<!-- https://x.com/nenomake/status/2057074759704449211?s=12 -->
+<blockquote class="twitter-tweet"><p lang="ja" dir="ltr">C# Kaigi 2026 を公開しました！ <a href="https://t.co/62DBCn1u9b">https://t.co/62DBCn1u9b</a> <a href="https://twitter.com/hashtag/csharpkaigi?src=hash&amp;ref_src=twsrc%5Etfw">#csharpkaigi</a></p>&mdash; 何縫ねの。 (@nenoMake) <a href="https://twitter.com/nenoMake/status/2057074759704449211?ref_src=twsrc%5Etfw">May 20, 2026</a></blockquote>
+<script async src="https://platform.twitter.com/widgets.js" charset="utf-8"></script>
+
+### Visual Studio May Update – Plan, Review, Refine - Visual Studio Blog
+https://devblogs.microsoft.com/visualstudio/visual-studio-may-update-plan-review-refine/
+
+### Qt Bridges: Public Beta for the C# Bridge Is Out!
+https://www.qt.io/blog/qt-bridges-public-beta-for-csharp
+
+### Announcing Agent Governance Toolkit MCP Extensions for .NET - .NET Blog
+https://devblogs.microsoft.com/dotnet/announcing-agent-governance-toolkit-mcp-extensions-for-dotnet/
+
+## リリース
+- [AvaloniaUI/Avalonia](https://github.com/AvaloniaUI/Avalonia)
+    - [11.3.16](https://github.com/AvaloniaUI/Avalonia/releases/tag/11.3.16)
+- [aws/aws-sdk-net](https://github.com/aws/aws-sdk-net)
+    - [4.0.248.0](https://github.com/aws/aws-sdk-net/releases/tag/4.0.248.0), [4.0.249.0](https://github.com/aws/aws-sdk-net/releases/tag/4.0.249.0), [4.0.250.0](https://github.com/aws/aws-sdk-net/releases/tag/4.0.250.0), [4.0.251.0](https://github.com/aws/aws-sdk-net/releases/tag/4.0.251.0), [4.0.252.0](https://github.com/aws/aws-sdk-net/releases/tag/4.0.252.0), [4.0.253.0](https://github.com/aws/aws-sdk-net/releases/tag/4.0.253.0), [4.0.254.0](https://github.com/aws/aws-sdk-net/releases/tag/4.0.254.0), [4.0.255.0](https://github.com/aws/aws-sdk-net/releases/tag/4.0.255.0)
+- [Azure/azure-cosmos-dotnet-v3](https://github.com/Azure/azure-cosmos-dotnet-v3)
+    - [3.60.0](https://github.com/Azure/azure-cosmos-dotnet-v3/releases/tag/3.60.0)
+- [Azure/azure-sdk-for-net](https://github.com/Azure/azure-sdk-for-net)
+    - [Azure.AI.Speech.Transcription_1.0.0](https://github.com/Azure/azure-sdk-for-net/releases/tag/Azure.AI.Speech.Transcription_1.0.0), [Azure.Core_1.56.0](https://github.com/Azure/azure-sdk-for-net/releases/tag/Azure.Core_1.56.0), [Azure.Core_1.57.0](https://github.com/Azure/azure-sdk-for-net/releases/tag/Azure.Core_1.57.0), [Azure.Identity.Broker_1.7.0](https://github.com/Azure/azure-sdk-for-net/releases/tag/Azure.Identity.Broker_1.7.0), [Azure.Monitor.OpenTelemetry.Exporter_1.8.1](https://github.com/Azure/azure-sdk-for-net/releases/tag/Azure.Monitor.OpenTelemetry.Exporter_1.8.1), [Azure.ResourceManager.Storage_1.7.0](https://github.com/Azure/azure-sdk-for-net/releases/tag/Azure.ResourceManager.Storage_1.7.0), [System.ClientModel_1.13.0](https://github.com/Azure/azure-sdk-for-net/releases/tag/System.ClientModel_1.13.0)
+- [CommunityToolkit/Aspire](https://github.com/CommunityToolkit/Aspire)
+    - [v13.3.0](https://github.com/CommunityToolkit/Aspire/releases/tag/v13.3.0)
+- [DataDog/dd-trace-dotnet](https://github.com/DataDog/dd-trace-dotnet)
+    - [v3.44.0](https://github.com/DataDog/dd-trace-dotnet/releases/tag/v3.44.0)
+- [dotnet/maui](https://github.com/dotnet/maui)
+    - [10.0.70](https://github.com/dotnet/maui/releases/tag/10.0.70)
+- [googleapis/google-cloud-dotnet](https://github.com/googleapis/google-cloud-dotnet)
+    - [Google.Cloud.Compute.V1-3.28.0](https://github.com/googleapis/google-cloud-dotnet/releases/tag/Google.Cloud.Compute.V1-3.28.0), [Google.Cloud.Container.V1-3.38.0](https://github.com/googleapis/google-cloud-dotnet/releases/tag/Google.Cloud.Container.V1-3.38.0), [Google.Cloud.Logging.Log4Net-5.0.0](https://github.com/googleapis/google-cloud-dotnet/releases/tag/Google.Cloud.Logging.Log4Net-5.0.0), [Google.Cloud.Support.V2-1.6.0](https://github.com/googleapis/google-cloud-dotnet/releases/tag/Google.Cloud.Support.V2-1.6.0)
+- [icsharpcode/ILSpy](https://github.com/icsharpcode/ILSpy)
+    - [v10.1](https://github.com/icsharpcode/ILSpy/releases/tag/v10.1)
+- [MessagePack-CSharp/MessagePack-CSharp](https://github.com/MessagePack-CSharp/MessagePack-CSharp)
+    - [v2.5.205](https://github.com/MessagePack-CSharp/MessagePack-CSharp/releases/tag/v2.5.205), [v3.1.6](https://github.com/MessagePack-CSharp/MessagePack-CSharp/releases/tag/v3.1.6)
+- [microsoft/aspire](https://github.com/microsoft/aspire)
+    - [v13.3.2](https://github.com/microsoft/aspire/releases/tag/v13.3.2), [v13.3.3](https://github.com/microsoft/aspire/releases/tag/v13.3.3), [v13.3.4](https://github.com/microsoft/aspire/releases/tag/v13.3.4), [v13.3.5](https://github.com/microsoft/aspire/releases/tag/v13.3.5)
+- [StackExchange/StackExchange.Redis](https://github.com/StackExchange/StackExchange.Redis)
+    - [2.13.10](https://github.com/StackExchange/StackExchange.Redis/releases/tag/2.13.10)
+- [unoplatform/uno](https://github.com/unoplatform/uno)
+    - [6.5.237](https://github.com/unoplatform/uno/releases/tag/6.5.237)
+
+## アーティクル、スライドなど
+### Give Your .NET MAUI Android Apps a Material 3 Makeover - .NET Blog
+https://devblogs.microsoft.com/dotnet/dotnet-maui-material-3/
+
+### Doing More with GitHub Copilot as a .NET Developer - .NET Blog
+https://devblogs.microsoft.com/dotnet/doing-more-with-github-copilot/
+
+### EntityFrameworkCoreのバージョンをプロジェクトごとに分けてマイグレーションを実行する（WPF + MSIX + SQLite） - Qiita
+https://qiita.com/msms/items/8019a03dd24bba81e2da
+
+### 【C#データ構造】Segment Treeで区間最小値を高速に求める
+https://zenn.dev/student_blog/articles/segment-tree-range-min-csharp
+
+### How Windows PE Files Use Custom Resources to Embed Anything » TrainSec
+https://trainsec.net/library/windows-internals/how-windows-pe-files-use-custom-resources-to-embed-anything/
+
+### Zstandard compression in .NET 11
+https://steven-giesel.com/blogPost/6066abb6-640a-4225-ac33-3f4d5a1a1d16
+
+### We DO NOT own ilspy dot org · Issue #3709 · icsharpcode/ILSpy
+https://github.com/icsharpcode/ILSpy/issues/3709
+
+### .NETでのサプライチェーン攻撃対策
+https://zenn.dev/litharge/articles/668e15f498345a
+
+### C# Networking Deep Dive With io_uring — Part 4 — zerg
+https://mda2av.github.io/zerg/blog/io-uring-minima-part-4.html
+
+- [C# Networking Deep Dive With io_uring — Part 5 — zerg](https://mda2av.github.io/zerg/blog/io-uring-minima-part-5.html)
+
+### Microsoft Agent Framework をローカルLLMで試してみる その14(MCPクライアント)
+https://zenn.dev/yy7613/articles/e329f7ebbb3c00
+
+### Windows EC2 に .NET Aspire Dashboard を Dockerなしで導入する
+https://zenn.dev/kutar/articles/59933b6bdd24fe
+
+### Fenwick Tree (BIT)を図解でわかりやすく解説
+https://zenn.dev/student_blog/articles/fenwick-tree-bit-csharp
+
+### Cake v6.2.0 released
+https://cakebuildnet.medium.com/cake-v6-2-0-released-97fa838a35f9
+
+### Rider 2026.2 EAP 3: Cost-effective Agentic Test Coverage, Code Change Previews, GameDev Templates, and NuGet Improvements | The .NET Tools Blog
+https://blog.jetbrains.com/dotnet/2026/05/22/rider-2026-2-eap-3-cost-effective-agentic-test-coverage-code-change-previews-gamedev-templates-and-nuget-improvements/
+
+### WinUI 3で商用クオリティの「カスタムタイトルバー」を実装する - Qiita
+https://qiita.com/youx2moon/items/ef8901a94d2746fbb3ce
+
+### MSBuild SDK ベースになった Azure Functions の新しい .NET Isolated SDK がプレビューに - しばやん雑記
+https://blog.shibayan.jp/entry/2026/05/25/175710
+
+### How I bypassed Blazor WebAssembly's Virtual DOM using raw WASM pointers
+https://dev.to/unitbuilds_cc/how-i-bypassed-blazor-webassemblys-virtual-dom-using-raw-wasm-pointers-4jn7
+
+### dotMorten | Automatically getting API difference diagrams in your .NET PRs
+https://xaml.dev/post/automatically-getting-api-difference-diagrams-in-your-net-prs
+
+### いまさら聞けない CancellationToken
+https://zenn.dev/poipoionigiri/articles/eafa9efa99be11
+
+### Your dev loop is full of tribal knowledge | Aspire Blog
+https://devblogs.microsoft.com/aspire/dev-loop-tribal-knowledge/
+
+### Microsoft 公式の WinUI agent plugin で WinUI 3 アプリ開発がぐっと楽になった話
+https://zenn.dev/microsoft/articles/winui-agent-plugin
+
+### .NET (OK, C#) finally gets union types🎉: Exploring the .NET 11 preview - Part 2
+https://andrewlock.net/exploring-the-dotnet-11-preview-2-dotnet-gets-union-types/
+
+### HarnessAgent を試す - Microsoft Agent Framework (C#)
+https://zenn.dev/microsoft/articles/agent-framework-harness-intro
+
+### Microsoft Agent Framework の CodeAct を使って JavaScript を実行してみた
+https://zenn.dev/yy7613/articles/d4e0c2762beac6
+
+### 【.NET】最近マージされたLINQのMin/Maxの最適化
+https://zenn.dev/prozolic/articles/d982d5f9f82973
+
+### Pythonで学習したCNNモデルをONNX Runtime (C#) で推論してみた - Qiita
+https://qiita.com/inuta-one/items/31ea766cbfaa3fbc1653
+
+### Playwright+ for .NET Apps
+https://platform.uno/blog/playwright-for-dotnet-apps/
+
+### Streamline Aspire SDK Updates with GitHub Actions
+https://csharp.christiannagel.com/2026/05/10/aspire-update/
+
+### デジタル認証API認証をしてみたい
+https://zenn.dev/au/articles/why-choose-dotnet
+
+### Writing Allocation-Free Code in .NET
+https://slicker.me/dotnet/allocation-free.html
+
+### VSLive! Microsoft AI Hackathon 2026: Send Your Team Home With Working Code - Visual Studio Blog
+https://devblogs.microsoft.com/visualstudio/vslive-microsoft-ai-hackathon-2026-send-your-team-home-with-working-code/
+
+### Microsoft Agent Framework の Magentic を頑張って動かしてみた ( C# ver 1.5.0 での確認 )
+https://zenn.dev/yy7613/articles/2cd76b4845c553
+
+### Agent Governance Toolkit の Agent Trust によるエージェント信頼性管理 - .NET 9 での実装入門
+https://zenn.dev/microsoft/articles/agent-governance-toolkit-trust-02
+
+### NuGet Package Pruning: Cleaner Dependencies and Actionable Vulnerability Reports - .NET Blog
+https://devblogs.microsoft.com/dotnet/nuget-package-pruning-in-dotnet-10/
+
+### Plan Before You Build: Introducing the Plan agent in Visual Studio - Visual Studio Blog
+https://devblogs.microsoft.com/visualstudio/plan-before-you-build-introducing-the-plan-agent-in-visual-studio/
+
+### Why do Windows client editions on 32-bit x86 systems artificially limit RAM to 4 GB? - The Old New Thing
+https://devblogs.microsoft.com/oldnewthing/20260512-00/?p=112316
+
+### Microsoft Foundry Local 1.1 を .NET で使ってみる
+https://blog.azure.moe/2026/05/18/microsoft-foundry-local-1-1-%e3%82%92-net-%e3%81%a7%e4%bd%bf%e3%81%a3%e3%81%a6%e3%81%bf%e3%82%8b/
+
+### 12 バイトで .NET メソッドの行き先を変える - Qiita
+https://qiita.com/ZiYuCai1984/items/f712d23e71d9d2e358dd
+
+### 設計を逆転させたら、ウェーハマップ描画が3秒から1.6ミリ秒になった話
+https://zenn.dev/sitio1/articles/5d9f66005dbd21
+
+## ライブラリ、リポジトリ、ツールなど
+### resx-designer - Visual Studio Marketplace
+https://marketplace.visualstudio.com/items?itemName=hetima.resx-designer
+
+- [.NETの不満を解消するStrings.resx編集＆Designer.cs自動生成VS Code拡張機能を作った - Qiita](https://qiita.com/hetima/items/a61a1d039e524fa79796)
+
+### ツイート
+<!-- https://x.com/cognition/status/2057496130225668360?s=12&t=ggvrrZ7oLogHyNoIGNgjbw -->
+<blockquote class="twitter-tweet"><p lang="en" dir="ltr">Devin is getting a Windows PC.<br><br>Devin can now natively run in a Windows VM, so it can build, run, and test native Windows applications. <a href="https://t.co/mvDOguAuLo">pic.twitter.com/mvDOguAuLo</a></p>&mdash; Cognition (@cognition) <a href="https://twitter.com/cognition/status/2057496130225668360?ref_src=twsrc%5Etfw">May 21, 2026</a></blockquote>
+<script async src="https://platform.twitter.com/widgets.js" charset="utf-8"></script>
+
+
+<!-- https://x.com/jcouv/status/2056601950452588873?s=12 -->
+<blockquote class="twitter-tweet"><p lang="en" dir="ltr">We merged an early C# 15 preview feature into .NET 11 preview 5: closed class hierarchies.<br><br>Allows a `closed` modifier on a `class` declaration.<br>A `closed` class prevents direct inheritance from other assemblies, so pattern matching can treat its derived types as a complete set.</p>&mdash; Julien Couvreur (@jcouv) <a href="https://twitter.com/jcouv/status/2056601950452588873?ref_src=twsrc%5Etfw">May 19, 2026</a></blockquote>
+<script async src="https://platform.twitter.com/widgets.js" charset="utf-8"></script>