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Welcome to what's new in the .NET docs for March 2025. This article lists some of the major changes to docs during this period.
.NET breaking changes
New articles
- APIs Removed from System.Security.Cryptography.Pkcs netstandard2.0
- Applications referencing both WPF and WinForms must disambiguate MenuItem and ContextMenu types
- Change default workload configuration from 'loose manifests' to 'workload sets' mode
- MSBuild custom culture resource handling
- NU1510 is raised for direct references pruned by NuGet
- Windows Forms obsoletions (.NET 10)
- X509Certificate and PublicKey key parameters can be null
AI in .NET
New articles
- Create a .NET AI app to chat with custom data using the AI app template extensions
- Tutorial: Evaluate a model's response with response caching and reporting
.NET fundamentals
New articles
- Compliance libraries in .NET
- Data classification in .NET
- Data redaction in .NET
- Generate unit tests with GitHub Copilot
- Mutation testing
- Simplify LINQ type check and cast (IDE0121)
- Source-generated metrics with strongly typed tags
- Unit testing C# in .NET using dotnet test and xUnit
- Use collection expression for new (IDE0306)
- Use implicitly typed lambda (IDE0350)
- Use unbound generic type (IDE0340)
Updated articles
- Make HTTP requests with the HttpClient class - Freshness Edit: dotnet content
- Unit testing best practices for .NET - Freshness Edit: dotnet content
- What's new in .NET 10 - Update What's New for .NET 10 with Preview 2 info
C# language
Updated articles
- C#
ifstatements and loops - conditional logic tutorial - How to use integer and floating point numbers in C#
- Introduction to C# - interactive tutorial
- Learn to manage data collections using List<T> in C#
- Asynchronous programming scenarios - Freshness Edit: dotnet content
- Attributes - Freshness Edit: dotnet content
Azure SDK for .NET
Updated articles
- Authenticate .NET apps to Azure services during local development using service principals - Update guidance and remove tables
.NET Framework
Updated articles
- SqlMetal.exe (Code Generation Tool) - Fix build suggestions
Community contributors
The following people contributed to the .NET docs during this period. Thank you! Learn how to contribute by following the links under "Get involved" in the what's new landing page.
- bigboybamo - Olabamiji Oyetubo
- sigmade - Yegor Sychev
- am11 - Adeel Mujahid
- Dixin - Dixin
- EngincanV - Engincan VESKE
- erop - Egor Ushakov
- eveshogweyore - Eveshogweyore Alle
- Fantoom -
- hakenr - Robert Haken
- jiabiao -
- kaiquekandykoga - Kaíque Kandy Koga
- kevincathcart-cas -
- Kore-rep - Angus Longmore
- mahabubulhasan - Mahabubul Hasan
- nprorekhin - Nikita Prorekhin
- perlun - Per Lundberg
- Rageking8 -
- rakshambigai20 - Rakshambigai Balaraman
- rextor92 - Daniel Tsvetkov
- sanamhub - Sanam
- scrooge1987 - Yurii Rovinskyi
- StephenCleary - Stephen Cleary
- thomhurst - Tom Longhurst
- YohDeadfall - Yoh Deadfall
Collaborate with us on GitHub
The source for this content can be found on GitHub, where you can also create and review issues and pull requests. For more information, see our contributor guide.
