2025-07-01: LINQPad 9 Early Preview, ReSharper and Rider 2025.1.4, System.CommandLine 2.0.0-beta5

トピックス

ReSharper and Rider 2025.1.4: Another Set of Bug-fixes Released | The .NET Tools Blog

https://blog.jetbrains.com/dotnet/2025/06/30/resharper-and-rider-2025-1-4/

• ReSharper and Rider 2025.1.3: Important Updates Released | The .NET Tools Blog

LINQPad 9 Early Preview

https://www.linqpad.net/linqpad9.aspx

Better Models, Smarter Defaults: Claude Sonnet 4, GPT-4.1, and More Control in Visual Studio - Visual Studio Blog

https://devblogs.microsoft.com/visualstudio/better-models-smarter-defaults-claude-sonnet-4-gpt-4-1-and-more-control-in-visual-studio/

Agent mode is now generally available with MCP support - Visual Studio Blog

https://devblogs.microsoft.com/visualstudio/agent-mode-is-now-generally-available-with-mcp-support/

Announcing System.CommandLine 2.0.0-beta5 and our path to a stable release · Issue #2576 · dotnet/command-line-api

https://github.com/dotnet/command-line-api/issues/2576

リリース

• App-vNext/Polly
  • 8.6.1
• AvaloniaUI/Avalonia
  • 11.3.2
• aws/aws-sdk-net
  • 3.7.1062.0, 3.7.1063.0, 3.7.1064.0, 3.7.1065.0, 3.7.1066.0, 3.7.1067.0, 3.7.1068.0, 3.7.1069.0, 3.7.1070.0, 3.7.1071.0, 3.7.1072.0, 3.7.1073.0, 3.7.1074.0, 4.0.30.0, 4.0.31.0, 4.0.32.0, 4.0.33.0, 4.0.34.0, 4.0.35.0, 4.0.36.0, 4.0.37.0, 4.0.38.0, 4.0.39.0, 4.0.40.0, 4.0.41.0, 4.0.42.0
• Azure/azure-cosmos-dotnet-v3
  • 3.52.0
• Azure/azure-sdk-for-net
  • Azure.Communication.Chat_1.4.0, Azure.Communication.PhoneNumbers_1.4.0, Azure.Extensions.AspNetCore.DataProtection.Blobs_1.5.1, Azure.Extensions.AspNetCore.DataProtection.Keys_1.6.1, Azure.Identity_1.14.1, Azure.Messaging.EventGrid_5.0.0, Azure.Messaging.EventGrid.SystemEvents_1.0.0, Azure.Messaging.EventHubs_5.12.2, Azure.Messaging.ServiceBus_7.20.1, Azure.Monitor.Query_1.7.0, Azure.Provisioning.AppService_1.1.1, Azure.Provisioning.AppService_1.2.0, Azure.Provisioning.OperationalInsights_1.1.0, Azure.Provisioning.PostgreSql_1.1.1, Azure.Provisioning.Storage_1.1.0, Azure.Provisioning.Storage_1.1.1, Azure.ResourceManager.CognitiveServices_1.5.0, Azure.ResourceManager.ContainerService_1.2.4, Azure.ResourceManager.DataFactory_1.9.0, Azure.ResourceManager.NetworkCloud_1.2.0, Azure.ResourceManager.OracleDatabase_1.1.0, Azure.ResourceManager.PostgreSql_1.3.0, Azure.ResourceManager.Resources_1.11.0, Azure.Search.Documents_11.6.1, Azure.Security.KeyVault.Administration_4.6.0, Azure.Security.KeyVault.Certificates_4.8.0, Azure.Security.KeyVault.Keys_4.8.0, Azure.Security.KeyVault.Secrets_4.8.0, Microsoft.Azure.WebJobs.Extensions.EventGrid_3.5.0, Microsoft.Azure.WebJobs.Extensions.ServiceBus_5.17.0, Microsoft.Azure.WebJobs.Extensions.SignalRService_1.14.1, Microsoft.Azure.WebJobs.Extensions.Tables_1.4.0, Microsoft.Extensions.Azure_1.12.0
• DataDog/dd-trace-dotnet
  • v3.19.0, v3.20.0
• dotnet/aspire
  • v9.3.2
• dotnet/aspnetcore
  • v8.0.17, v9.0.6
• dotnet/efcore
  • v8.0.17, v9.0.6
• dotnet/maui
  • 9.0.71, 9.0.80, 9.0.81
• googleapis/google-cloud-dotnet
  • Google.Cloud.AIPlatform.V1-3.35.0, Google.Cloud.AIPlatform.V1-3.36.0, Google.Cloud.AlloyDb.V1-1.11.0, Google.Cloud.Bigtable.Admin.V2-3.27.0, Google.Cloud.Channel.V1-2.15.0, Google.Cloud.Dlp.V2-4.19.0, Google.Cloud.NetworkServices.V1-1.2.0, Google.Cloud.PubSub.V1-3.25.0, Google.Cloud.PubSub.V1-3.26.0, Google.Cloud.Retail.V2-2.14.0, Google.Cloud.Spanner-5.1.0
• MessagePack-CSharp/MessagePack-CSharp
  • v3.1.4
• newrelic/newrelic-dotnet-agent
  • v10.42.0
• unoplatform/uno
  • 6.0.780, 6.0.797

アーティクル、スライドなど

C# - ComboBox - 右詰め 3桁カンマ区切

https://zenn.dev/chai0917/articles/3618e9d31ce6ab

C# の SerialPort が持つ名前こだわりと、その害の軽減策

https://qiita.com/mikecat_mixc/items/114816e2176e6e806f0f

GitHub CopilotのエージェントモードをVisualStudioで実際に使ってみた様子の紹介

https://zenn.dev/suusanex/articles/ac9ebbd150ef07

Binding to native iOS frameworks in .NET 9

https://qotoqot.com/tech/ios-bindings/

Leveling up Ubuntu for Developers: .NET Edition

https://discourse.ubuntu.com/t/leveling-up-ubuntu-for-developers-net-edition/63162

Rider 2025.2 EAP 7: Low-Level Exception Suppression and Other Updates for Debugging Games | The .NET Tools Blog

https://blog.jetbrains.com/dotnet/2025/06/26/rider-2025-2-eap-7-low-level-exception-suppression/

非同期処理ブートキャンプ【2025年版】

https://zenn.dev/sator_imaging/articles/b0ab667808d563

Diagnosing Latency in .NET: Background GC and the Large Object Heap

https://medium.com/@anders_pedersen/diagnosing-latency-in-net-background-gc-and-the-large-object-heap-09449162b399

AWS Transform for .NET に ASP.NET WebForm をかけてみた

https://zenn.dev/_ta/articles/try-aws-transform-for-dotnet

.NET (C#) で Azure系のSDKを使うときに認証をどうにかしたい

https://blog.azure.moe/2025/06/27/net-c-%e3%81%a7-azure%e7%b3%bb%e3%81%aesdk%e3%82%92%e4%bd%bf%e3%81%86%e3%81%a8%e3%81%8d%e3%81%ab%e8%aa%8d%e8%a8%bc%e3%82%92%e3%81%a9%e3%81%86%e3%81%ab%e3%81%8b%e3%81%97%e3%81%9f%e3%81%84/

MSTestやxUnit.netと比較したときのNUnitの特異な点 - Qiita

https://qiita.com/laughter/items/fb38be3e34d5373387ad

Combining .NET Aspire with Temporal - Part 1 | rebecca powell

https://rebecca-powell.com/posts/2025-06-09-combining-dotnet-aspire-and-temporal-part-1/

The Story Behind MultiDrive

https://dev.to/empiree/the-story-behind-multidrive-eo8

【C#】バージョン管理とリリースを自動化する【Nerdbank.GitVersioning】

https://zenn.dev/arika/articles/20250623-gitversioning

Baslerのpylon SDKでカメラ画像を1枚取得する方法（C# × .NET 8） - Qiita

https://qiita.com/MilleVision/items/ffd29fa4e9dbf94dff17

C# - C:\ProgramData と Everyoneフルコントール

https://zenn.dev/chai0917/articles/fd0e56f6c10f28

クイックソートキラーを作る - Qiita

https://qiita.com/TETSURO1999/items/80a849deddbfe47d1e7e

Inside Access: Join Us at VS Live! Redmond for a Week of Deep Developer Learning - Visual Studio Blog

https://devblogs.microsoft.com/visualstudio/inside-access-join-us-at-vs-live-redmond-for-a-week-of-deep-developer-learning/

Legacy Code Survival Guide: Visual Basic and .NET in 2025

https://www.mobilize.net/blog/legacy-code-survival-guide-visual-basic-and-.net-in-2025

【C#】「プロパティ」再入門──ただのgetter/setterじゃない

https://zenn.dev/inuinu/articles/csharp-property-re-entry

サーバからファイルを受け取る (Blazor Server)

https://zenn.dev/tetr4lab/articles/d69583796163b4

JWTを使用したトークンベース認証と、ASP.NET Coreにおける実践 - Qiita

https://qiita.com/mia106/items/2e84e75c90f6c9e22a4d

Multimodal Vision Intelligence with .NET MAUI - .NET Blog

https://devblogs.microsoft.com/dotnet/multimodal-vision-intelligence-with-dotnet-maui/

Semantic Kernel の Agent に追加のコンテキストを提供する AIContext を試してみる

https://zenn.dev/microsoft/articles/semantickernel-aicontext

Rider 2025.2 EAP 5: Reimagined Monitoring Tool Window and New OpenTelemetry Plugin | The .NET Tools Blog

https://blog.jetbrains.com/dotnet/2025/06/16/rider-eap-5-new-monitoring-tool-opentelemetry-plugin/

OpenTelemetry Plugin for JetBrains Rider: Observability Inside Your IDE | The .NET Tools Blog

https://blog.jetbrains.com/dotnet/2025/06/16/opentelemetry-plugin-for-jetbrains-rider/

C# - Windows イベントログ

https://zenn.dev/chai0917/articles/e62e437d2fd85a

『Riderで「dotnet run file.cs」をサポートして欲しい』ってIssueを建てたから「いいね（Vote）」して欲しい - Qiita

https://qiita.com/RyotaMurohoshi/items/7194d6adaf52b4eb8594

.NETでWebページのPDFを作成する Playwright編 - Qiita

https://qiita.com/omt_teruki/items/874feb718a7db5dd7158

Windows C#でBLE HID(HoGP) Peripheral コンソールアプリを作成する

https://zenn.dev/nfukuoka/articles/qiita-20221231-321c2b1e1e7c8c0c0afc

普通と違う感じの Semantic Kernel 入門の目次

https://zenn.dev/microsoft/articles/semantickernel-edu-000

普通と違う感じの Semantic Kernel 入門 010「低レベルなメッセージ ハンドリング」

https://zenn.dev/microsoft/articles/semantickernel-edu-010

WinUI3でアプリ通知(トースト)を出す

https://zenn.dev/spacekey/articles/winui3-toast

WinUI3でとりあえずなんか動かしたいときの下準備(.NET 9版)

https://zenn.dev/spacekey/articles/winui3-project2

XElement を用いた C# における XML の解読 - Qiita

https://qiita.com/Nagachan_T/items/636305923988528cbcdc

.NET の Azure.AI.OpenAI SDK のエンドポイント

https://blog.azure.moe/2025/06/17/net-%e3%81%ae-azure-ai-openai-sdk-%e3%81%ae%e3%82%a8%e3%83%b3%e3%83%89%e3%83%9d%e3%82%a4%e3%83%b3%e3%83%88/

Improve Your Productivity with New GitHub Copilot Features for .NET! - .NET Blog

https://devblogs.microsoft.com/dotnet/improve-productivity-with-github-copilot-dotnet/

BlazorのJS相互運用をサービスとして切り出して使う - Qiita

https://qiita.com/onigiripudding/items/3f8267de8a4c7fbaa96f

.NET10でWPFのGridの行列指定がちょっと楽になる

https://zenn.dev/nin_neko/articles/201e486315d5f3

Multimodal Voice Intelligence with .NET MAUI - .NET Blog

https://devblogs.microsoft.com/dotnet/multimodal-voice-intelligence-with-dotnet-maui/

ライブラリ、リポジトリ、ツールなど

arika0093/BlazorLocalTime: BlazorLocalTime provides functionality to convert DateTime to the user's local time zone in Blazor applications.

https://github.com/arika0093/BlazorLocalTime

• 【BlazorLocalTime】Blazor Serverでタイムゾーンを考慮した日時を正しく表示/編集する

nuskey8/luau-dotnet: High-level Luau bindings for .NET and Unity

https://github.com/nuskey8/luau-dotnet?tab=readme-ov-file

ツイート

🎉 We’ve reached 50 million Visual Studio and Visual Studio Code users! A huge thank you to our incredible community, especially our subscribers, for making this milestone possible.

...and to celebrate, Sana and Lloyd share that their favorite Visual Studio Subscriber benefits… pic.twitter.com/BLGzAArmVI

— Microsoft Visual Studio (@VisualStudio) June 18, 2025

https://t.co/9fvmu06Ah5
だいぶ心ときめく提案を久々に見た。

— ++C++; // 管理人: 岩永 (@ufcpp) June 17, 2025