Main Announcements of the C# (.NET) Conference: What Microsoft Showed

C# (.NET) Conference: Key Announcements That Will Change Development

This week, the annual Microsoft .NET platform conference took place, gathering thousands of developers from around the world. The company presented key updates to the C# and .NET ecosystem that will set the development direction for the coming year. We've compiled the most important announcements that every developer should know about.

.NET 9: A New Stage of Performance

The main event was the presentation of .NET 9. The new version of the platform promises significant performance gains thanks to an improved JIT compiler and garbage collector optimizations. Key improvements include:

• Faster application startup — up to 20% faster due to improved profiling.
• Optimization for ARM64 — native support for Apple Silicon and ARM servers.
• New memory API — simplifying low-level operations without sacrificing safety.

C# 13: New Language Features

The C# language received another update. Version 13 focuses on simplifying syntax and expanding functionality. Here are the main features:

• Primary Constructors for classes — constructors can now be declared directly in the class signature, as was already done for record types.
• Improved collections — new methods for working with ReadOnlySpan and Span, speeding up data processing.
• Pattern matching for tuples — more concise condition checking and value extraction.

AI Toolkit for .NET

Microsoft announced deep integration of AI capabilities into the .NET ecosystem. Developers now have access to:

• Semantic Kernel SDK — a library for creating AI agents and working with large language models (LLMs).
• Built-in OpenAI support — ready-made clients for GPT-4 and DALL-E without additional packages.
• AI assistant in Visual Studio — machine learning-based code autocompletion, including generation of entire methods.

Simplifying Web Development

The updated ASP.NET Core received new templates and improved Blazor support. Developers can now create hybrid web applications that work both in the browser and on mobile devices with a single codebase. A new tool for automated API testing was also introduced.

What Does This Mean for Developers?

The announcements confirm Microsoft's course towards platform unification: one .NET for all types of applications — from cloud services to mobile apps. Special emphasis is placed on performance and AI integration, making .NET competitive in the era of machine learning. Developers should start learning .NET 9 and C# 13 now to be ready for the release in November of this year.

Stay tuned for updates on pythonlib.ru — we will continue to explore new C# and .NET features in our articles.