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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.

April 2, 2026

Explore union types in C# 15

Bill Wagner

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.

March 23, 2026

Generative AI for Beginners .NET: Version 2 on .NET 10

Pablo Lopes,Bruno Capuano

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

March 23, 2026

Ten Months with Copilot Coding Agent in dotnet/runtime

Stephen Toub - MSFT

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AI offers benefits, but at what cost?

Everyone is talking about AI, which in 2026 generally refers to LLMs. Developers are learning how to use such tools to improve their productivity. Businesses are wondering whether they will even need software developers in the near future. But how do the economics of agentic software development stack up, and how will they change in the near future?

.NET MAUI Community Standup | Introducing maui-labs

We have launched an official home for the treasure trove of amazing work that has been created lately for .NET MAUI developers. More platforms. More rendering options. More experiments. Come take a tour with us.

Imposter: A Mocking Library

Bitchiko Tchelidze joins us demo Imposter and walk us through what sets it apart from other mocking libraries.

MCP C# SDK v1.0 is Here!

The official MCP (Model Context Protocol) C# SDK v1.0 is here—and it’s a game changer for building AI-powered applications in .NET. In this session, we’ll break down what MCP is, why it matters, and how this new SDK unlocks powerful scenarios to connect your apps with AI models using a standardized protocol.

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