The new GitHub security extension for the GitHub Copilot app lets you browse code scanning alerts, ask Copilot to explain or fix them, and run a security review on local changes without leaving the app. It is in public preview. Developers who already rely on code scanning will find it a faster way to handle alerts.
GitHub is rolling out shared Copilot Automations, so a repository's cloud agent workflows no longer depend on the person who created them. Teams can read, edit and keep running these automations, with AI credits billed to the repository owner. Useful for bug reproduction, PR screenshots and incident triage.
After six years without a stable release, Dapper FluentMap is maintained again and version 3.6.0 adds nested mappings, property converters, isolated runtimes, analyzers and source generators. The author stresses keeping existing applications working during upgrades. The piece also covers what to check before moving from 2.0.0 and which databases are certified.
A practical guide to configuring Npgsql connection pooling in .NET and sizing pools across multiple application instances so PostgreSQL does not run out of connections. It stresses that pool limits must be calculated for the whole deployment, not a single process.
With iOS 26's Liquid Glass design, the Shell tab bar floats over content, which broke a .NET MAUI iPad layout, and an Xcode 27 build crashed at launch. The author walks through the UIScene migration, SafeAreaEdges-based page insets, and a map inside a WebView. It is a practical guide for MAUI developers targeting iOS 26 and 27.
PostSharp 2027.0 adds tooling that helps AI coding agents work correctly in PostSharp projects, including a plugin for Claude Code and Codex. The release also brings CLI commands that show which aspects were applied to a declaration after a build, per-message error documentation, and an aspect test framework. These are useful for .NET developers who write or maintain aspects.
Visual Studio 2026 v18.11 and its 18.11.1 servicing update add an opt-in setting that stops a solution build as soon as one project fails. Copilot Chat, the Debugger Agent and the Profiler Agent also received major changes. These updates touch everyday .NET 10 and C# 14 work, from compile loops to profiling and Git.
AWS has documented how to connect its AWS Transform MCP server to GitHub Copilot agent mode, so migrations can be driven from the chat box in Visual Studio or VS Code. The walkthrough ports an Azure Functions .NET app to AWS Lambda using the Lambda Annotations Framework. It is worth a read if your team is weighing an Azure-to-AWS move or wants a repeatable agent-driven migration workflow.
This guide explains why running MigrateAsync() at application startup couples deployments to schema changes and grants the app more database permissions than it needs. It walks through EF migration bundles as a controlled CI deployment step, with GitHub Actions and local examples. It also covers when runtime migrations are acceptable and the practical limits of bundles, such as the lack of a dry run.
JasperFx has released Bobcat 1.0, an MIT-licensed tool that projects human-readable specifications from the test frameworks you already use, including xUnit.net, TUnit, MSTest and NUnit. No Gherkin or wiki files are needed, only C# or F#. It also brings Supervisor for more reliable integration suites and telemetry output aimed at AI agents debugging failing tests.
How should you configure Claude Code permissions so a coding agent can build and test a .NET project without gaining database or publish authority? This guide explains the documented rule order, settings scopes, wildcard risks, and boundaries for migrations and deployments. It is worth reading before you run agents unattended on .NET repositories.
The October Visual Studio 2026 update lets you compare an earlier commit with your current working tree, including unsaved edits in progress, and resolve merge conflicts across many files at once. It also adds a new Copilot Chat experience, Hot Exit, and keyboard tab reordering. These changes speed up everyday Git work.