The .NET Insider

Your Monthly Dive into .NET Updates.

.NET 10 Preview 7 is now available! - .NET Blog

Seventh preview of .NET 10 with final refinements: faster runtime, ASP.NET Core & Blazor updates, and new C# 14 features.

devblogs.microsoft.com/dotnet/dotnet-10-preview-7

GPT-5 for Microsoft Developers - Microsoft for Developers

Microsoft unveils GPT-5 integration for developers, powering advanced reasoning across Visual Studio, Azure, and GitHub Copilot.

devblogs.microsoft.com/blog/gpt-5-for-microsoft-developers

Announcing the NuGet MCP Server Preview - .NET Blog

Preview of the NuGet MCP server, enabling AI-powered search, exploration, and integration of NuGet packages into workflows.

devblogs.microsoft.com/dotnet/nuget-mcp-server-preview

GPT-OSS - A C# Guide with Ollama - .NET Blog

Hands-on guide for running open-source GPT models via Ollama using C#, enabling AI-apps without external cloud dependencies.

devblogs.microsoft.com/dotnet/gpt-oss-csharp-ollama

Model Context Protocol (MCP) is Now Generally Available in Visual Studio

Model Context Protocol (MCP) is generally available in Visual Studio, letting developers connect tools, data, and AI models directly inside the IDE.

devblogs.microsoft.com/visualstudio/mcp-is-now-generally-available-in-visual-studio

Designing Multi-Agent Intelligence - Microsoft for Developers

Deep dive into orchestrating multiple AI agents that collaborate to solve complex development and business problems.

devblogs.microsoft.com/blog/designing-multi-agent-intelligence

Copilot Diagnostics toolset for .NET In Visual Studio - .NET Blog

New diagnostics toolset in Visual Studio helps .NET devs improve Copilot suggestions with better warnings, insights, and fixes.

devblogs.microsoft.com/dotnet/github-copilot-diagnostics-toolset-for-dotnet-in-visual-studio

Bring Your Own Model to Chat in Visual Studio - Visual Studio Blog

Visual Studio Chat now supports custom AI models—use enterprise-trained or OSS models directly in your dev environment.

devblogs.microsoft.com/visualstudio/bring-your-own-model-visual-studio-chat

Enhance your CLI testing workflow with the new dotnet test - .NET Blog

Learn how .NET 10 transforms dotnet test with native Microsoft.Testing.Platform integration, delivering better performance and enhanced diagnostics.

devblogs.microsoft.com/dotnet/dotnet-test-with-mtp

Better Control over Your Copilot Code Suggestions - Visual Studio Blog

Gain granular control over GitHub Copilot in Visual Studio with new filtering, acceptance, and enterprise policy options.

devblogs.microsoft.com/visualstudio/better-control-over-your-copilot-code-suggestions

YARP Reverse Proxy in ASP.NET Core

Guide to building a reverse proxy in ASP.NET Core using YARP, including setup, configuration, and real-world use cases.

www.nikolatech.net/blogs/yarp-reverse-proxy-asp-dotnet-core

EFCore.Visualizer - View Entity Framework Core query plan inside Visual Studio - .NET Blog

Inspect EF Core query plans inside Visual Studio with the new EF Core Visualizer—helping devs tune queries more easily.

devblogs.microsoft.com/dotnet/ef-core-visualizer-view-entity-framework-core-query-plan-inside-visual-studio

Specification Pattern in EF Core: Flexible Data Access Without Repositories

Explains how to use the Specification Pattern in EF Core for clean, reusable, and flexible data access without heavy repositories.

antondevtips.com/blog/specification-pattern-in-ef-core-flexible-data-access-without-repositories

Getting Started with C# Eval Expression

Explore safe techniques for evaluating C# expressions dynamically, comparing different approaches and trade-offs.

www.nikolatech.net/blogs/csharp-eval-expression

Getting Started with the Aspire CLI - .NET Blog

Step-by-step guide to the Aspire CLI—scaffold, run, and manage Aspire-based apps directly from the terminal.

devblogs.microsoft.com/dotnet/getting-started-with-the-aspire-cli

The .NET Insider – Issue 13