2026-07-03: SkiaSharp 4.0, WSL container public preview, Visual Studio June Update, .NET 8/9 End of Support

Published on Friday, 03 July 2026

トピックス

SkiaSharp 4.0 is here: announcing the first stable release - .NET Blog

https://devblogs.microsoft.com/dotnet/skiasharp-4-0-stable/

WSL container is now available for public preview

https://devblogs.microsoft.com/commandline/wsl-container-is-now-available-for-public-preview/

Visual Studio June Update - Track Your Usage, Trust Your Tools - Visual Studio Blog

https://devblogs.microsoft.com/visualstudio/visual-studio-june-update-track-your-usage-trust-your-tools/

.NET 8 and .NET 9 will reach End of Support on November 10, 2026 - .NET Blog

https://devblogs.microsoft.com/dotnet/dotnet-8-9-end-of-support/

C# Kaigi 2026 の Call for Proposal (トーク) を募集中

https://fortee.jp/csharpkaigi-2026/speaker/proposal/cfp

2026年9月19日 (土) に docomo R&D OPEN LAB ODAIBA にて開催される C# Kaigi 2026の Call for Proposal (CfP) を募集中。2026/07/05 (日)まで。

リリース

アーティクル、スライドなど

Accessファイルを純WASMで読もうとしたらCodexに「やめておけ」と言われた

https://zenn.dev/clavisflow/articles/dd31102c818910

Wasm でイベントソーシングを動かす: C# と Rust のドメインコードで試す

https://zenn.dev/jtechjapan_pub/articles/sekiban-wasm-runtime-public-container

Microsoft Agent Framework の LoopAgentを試してみた

https://zenn.dev/yy7613/articles/6baa8e35e1df54

イベント駆動で起きる Race Condition に MassTransit Saga でどう向き合うか

https://zenn.dev/pksha/articles/2088c13ac89ca6

Closed class hierarchies: Exploring the .NET 11 preview - Part 4

https://andrewlock.net/exploring-the-dotnet-11-preview-4-closed-class-hierarchies/

MCP Beyond the Chat Window: Build Diagnostics in CI - .NET Blog

https://devblogs.microsoft.com/dotnet/mcp-build-diagnostics-workflows/

Getting Inherited Controller Routes to work in ASP.NET Core

https://weblog.west-wind.com/posts/2026/Jun/30/Getting-Inherited-Controller-Routes-to-work-in-ASPNET-Core

ReactiveProperty.R3 を公開しました

https://zenn.dev/okazuki/articles/reactiveproperty-r3-overview

GitHub Copilot app の canvas に ASP.NET Core Blazor WASM を表示してみた

https://zenn.dev/microsoft/articles/ghc-app-canvas-blazor

Microsoft Agent Framework をローカルLLMで試してみる その16(Durable Entity state)

https://zenn.dev/yy7613/articles/d15b00c266c36d

Aspireを用いたBackstageのローカル検証環境構築

https://zenn.dev/ryoku4/articles/ad4ff452832bbf

Microsoft Agents Framework の Agent Skills 入門 - C# サンプルから学ぶ実装パターン

https://zenn.dev/microsoft/articles/agentframework-agentskill-01

Writing a .NET Garbage Collector in C# - Part 10: Finalizers

https://minidump.net/writing-a-net-gc-in-c-part-10/

Packaging and Package Identity for .NET apps with WinApp CLI on Windows - .NET Blog

https://devblogs.microsoft.com/dotnet/packaging-dotnet-apps-winapp/

.NET で巨大なマネージド配列を作ってみた - Qiita

https://qiita.com/hez2010/items/a464dc85421c5360d818

【Blazor + Syncfusion】SfDialogで削除確認ダイアログを作ってみて感じたこと - Qiita

https://qiita.com/af-dev-hub/items/9dd635b1ec0a006f1598

Automating your Visual Studio extension builds with GitHub Actions - Visual Studio Blog

https://devblogs.microsoft.com/visualstudio/automating-your-visual-studio-extension-builds-with-github-actions/

Migrating C# - Microsoft Agent Framework | Jesse Liberty

https://jesseliberty.com/2026/06/28/migrating-c-microsoft-agent-framework/

Creating Dual Use Windows GUI and Console Applications

https://weblog.west-wind.com/posts/2026/Jun/23/Creating-Dual-Use-Windows-GUI-and-Console-Applications

ライブラリ、リポジトリ、ツールなど

GitHub - actbit/AstFirst

https://github.com/actbit/AstFirst

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