Showing archive results for 2026

Apr 14, 2026
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.NET 11 Preview 3 is now available!

.NET Team

Find out about the new features in .NET 11 Preview 3 across the .NET runtime, SDK, libraries, ASP.NET Core, .NET MAUI, C#, Entity Framework Core, container images, and more!

.NETASP.NET CoreC#
Apr 7, 2026
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ASP.NET Core 2.3 end of support announcement

Daniel Roth

ASP.NET Core 2.3 will reach end of support on April 13, 2027. Learn what this means for your applications and how to upgrade to a modern supported version of .NET.

.NETASP.NET CoreLifecycle
Apr 2, 2026
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Explore union types in C# 15

Bill Wagner

C# 15 introduces union types — declare a closed set of case types with implicit conversions and exhaustive pattern matching. Try unions in preview today and see the broader exhaustiveness roadmap.

.NETC#
Mar 23, 2026
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Generative AI for Beginners .NET: Version 2 on .NET 10

Pablo,
Bruno

Announcement of Version 2 of Generative AI for Beginners .NET, a free course rebuilt for .NET 10 with Microsoft.Extensions.AI, updated RAG patterns, and new agent framework content across five structured lessons for building production-ready AI apps.

.NETC#AI
Mar 23, 2026
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Ten Months with Copilot Coding Agent in dotnet/runtime

Stephen Toub - MSFT

After ten months using GitHub Copilot Coding Agent (CCA) in dotnet/runtime, the .NET team shares data-driven lessons on cloud-AI-assisted development.

.NETAIDeveloper Stories
Mar 19, 2026
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Accelerating .NET MAUI Development with AI Agents

David Ortinau

Learn how custom-built AI agents are dramatically improving the .NET MAUI contribution workflow, reducing issue resolution time by 50-70% while increasing test coverage and code quality.

.NET.NET MAUIAI
Mar 12, 2026
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Modernize .NET Anywhere with GitHub Copilot

Mika Dumont

See how the modernize-dotnet agent helps you assess apps, create upgrade plans, and modernize .NET projects from Visual Studio, VS Code, GitHub Copilot CLI, and GitHub.

.NETC#Visual Studio