dotInsights | December 2025

Rachel Appel

Did you know? Calling GC.Collect() explicitly forces the garbage collector to run and reclaim memory from unreachable objects. However, it’s generally discouraged to use this method in most applications because the garbage collector is highly optimized to run automatically. Forcing it can lead to performance issues by interrupting the normal optimization process.

Welcome to dotInsights by JetBrains! This newsletter is the home for recent .NET and software development related information.

🔗 Links

Here’s the latest from the developer community.

• .NET 10 Breaking Changes To Keep An Eye On When Upgrading – Khalid Abuhakmeh
• Easier reflection with [UnsafeAccessorType] in .NET 10 – Andrew Lock
• Big Breaking Changes in .NET 10 🎥 – Nick Chapsas
• 2code ^ !2code [S2025E13] Multi-targeting Roslyn Components 🎥 – FlashOWare with Stefan Pölz and Eva Ditzelmüller
• You’re Not Writing DRY Code, You’re Just Confused 🎥 – Gui Ferreira
• Jimmy Bogard on Monetizing Open Source Software [EPISODE 877] 🎥 – Technology and Friends by David Giard
• C# 14: The Null-conditional Assignment – Thomas Claudius Huber
• Interesting new C# 14 features coming with .NET 10 – Thomas Levesque
• Hiding and Revealing Mobile Content with the ASP.NET MVC Responsive Panel – Peter Vogel
• How to Programmatically Merge and Split Word DOCX Documents in .NET – MacKenzie Albitz

🔦 From our .NET Guide

Each month we feature tutorials or tips from our .NET Guide.

In this short series, we’ll explore localization in .NET. For those unfamiliar with the concept, localization is the process of matching an application’s language and visuals to a specific culture. We’ll see just how easy it is to take an existing .NET application and localize it.

by Khalid Abuhakmeh

Read more

☕ Coffee Break

Take a break to catch some fun social posts.

🎄Tis the season! Participate or enjoy the F# Advent Calendar in English 2025 hosted by Sergey Tihon 🎅

🗞️ JetBrains News

What’s going on at JetBrains? Check it out here:

• Rider 2025.3: Day-One Support for .NET 10 and C# 14, a New Default UI, and Faster Startup
• JetBrains Is Heading to VSLive! Orlando
• C# 14 Language Features in ReSharper and Rider 2025.3
• What’s Been Fixed in Rider 2025.3
• ReSharper C++ 2025.3: C++26 Language Support, Faster Unreal Engine Startup, and Visual Studio 2026 Compatibility
• ReSharper 2025.3: Day-One C# 14 Support, Visual Studio 2026 Compatibility, and Major Performance Gains
• The Rider 2025.3 Release Candidate Is Now Available
• The ReSharper, .NET Tools, and ReSharper C++ 2025.3 Release Candidates Are Now Available

✉️ Comments? Questions? Send us an email. 

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