Suppressing Roslyn Analyzer Warnings Programmatically using DiagnosticSuppressor - Gérald Barré Learn how to programmatically suppress Roslyn analyzer warnings using the DiagnosticSuppressor API.

Suppressing Roslyn Analyzer Warnings Programmatically using DiagnosticSuppressor #dotnet #roslyn www.meziantou.net/suppressing-roslyn-analy...

.NET R&D Digest (March, 2026) This issue includes bits (or I would rather say bytes) of AI, bits of software development, operating systems, web, diagnostics, performance, C++, C#,  and of course .NET and .NET Internals.

New issue of .NET R&D Digest is here! Thx to
@simonwillison.net, @birgitta410.bsky.social, @kief.com, @lemire.bsky.social, @kevingosse.net, @andrewlock.bsky.social, @meziantou.net, @stevesanderson.bsky.social & other authors for their g8 content!

#dotnet

olegkarasik.wordpress.com/2026/04/03/n...

URL Pattern Matching in .NET - Gérald Barré A .NET implementation of the WHATWG URL Pattern API for flexible URL matching and routing with wildcards and parameter extraction.

URL Pattern Matching in .NET #NuGet #dotnet www.meziantou.net/url-pattern-matching-in-...

Speed Up .NET CI with Test Sharding - Gérald Barré Learn how to split .NET tests into deterministic CI shards to run in parallel and reduce pipeline feedback time.

Speed Up .NET CI with Test Sharding #NuGet #dotnet #github www.meziantou.net/split-dotnet-test-projec...

Implementing RFC-compliant HTTP caching for HttpClient in .NET - Gérald Barré Learn how to implement HTTP caching in .NET using Meziantou.Framework.Http.Caching to reduce latency and network traffic with RFC 7234 and 8246 compliance.

Implementing RFC-compliant HTTP caching for HttpClient in .NET #NuGet #dotnet #performance www.meziantou.net/implementing-rfc-complia...

Visualize GitHub Actions runs with Meziantou.GitHubActionsTracing - Gérald Barré Turn GitHub Actions runs into HTML, Chromium, Speedscope, and OpenTelemetry traces to quickly find bottlenecks, slow steps, and flaky tests.

Visualize GitHub Actions runs with Meziantou.GitHubActionsTracing #github www.meziantou.net/visualize-github-actions...

Creating case-sensitive folders on Windows using C# - Gérald Barré Learn how to enable per-directory case sensitivity on Windows using C# and P/Invoke. Create files with the same name but different case in the same folder.

Creating case-sensitive folders on Windows using C# #dotnet #windows www.meziantou.net/creating-case-sensitive-...

Validating PowerShell script syntax in GitHub Actions workflows - Gérald Barré Learn how to validate the syntax of PowerShell scripts embedded in GitHub Actions workflows using a custom PowerShell function.

Validating PowerShell script syntax in GitHub Actions workflows #github #powershell www.meziantou.net/validating-powershell-sc...

Getting more information in MSBuild binlogs with property tracking - Gérald Barré Learn how to enable MSBuild property tracking to get detailed information about property changes in your build logs.

Getting more information in MSBuild binlogs with property tracking #dotnet #msbuild www.meziantou.net/getting-more-information...

Retrieve method source file location at runtime using Portable PDBs in .NET - Gérald Barré Learn how to retrieve the source file path and line number for any method at runtime using Portable PDBs in .NET.

Retrieve method source file location at runtime using Portable PDBs in .NET #dotnet #msbuild www.meziantou.net/retrieve-method-source-f...

Reduce GitHub Actions runner CPU usage - Gérald Barré In this post, I'll show you how to reduce the CPU usage of your self-hosted GitHub Actions runners by replacing the default busy-waiting sleep implementation with a more efficient one.

Reduce GitHub Actions runner CPU usage www.meziantou.net/reduce-github-actions-ru...

Understanding and Managing Mark of the Web in .NET - Gérald Barré In this post, I describe how to read, set, and remove the Mark of the Web security feature in Windows using .NET.

Understanding and Managing Mark of the Web in .NET #dotnet #security #windows www.meziantou.net/understanding-and-managi...

Renovate can handle updates of MSBuild SDKs

Creating a custom MSBuild SDK to reduce boilerplate in .NET projects - Gérald Barré Learn how to create custom MSBuild SDKs to enforce coding standards, add packages dynamically, and configure .NET projects consistently.

Creating a custom MSBuild SDK to reduce boilerplate in .NET projects #dotnet www.meziantou.net/creating-a-custom-msbuil...

C# 14 Extension Members: Enhancing Polyfill Libraries - Gérald Barré Discover how C# 14 extension members extend beyond instance methods to include properties and static methods, enabling more comprehensive polyfill libraries.

C# 14 Extension Members: Enhancing Polyfill Libraries #dotnet www.meziantou.net/csharp-14-extension-memb...

Don't forget the leap second...

Thread-Safe Initialization with LazyInitializer - Gérald Barré Learn how to use LazyInitializer.EnsureInitialized for thread-safe initialization in .NET as an alternative to Lazy<T> class.

Thread-Safe Initialization with LazyInitializer #dotnet www.meziantou.net/thread-safe-initializati...

Understanding When Type.FullName Returns Null in .NET - Gérald Barré Learn about the specific scenarios in .NET where Type.FullName returns null, including generic types with open parameters and function pointers.

Understanding When Type.FullName Returns Null in .NET #dotnet www.meziantou.net/understanding-when-type-...

How to Find an Available Network Port for a server in .NET - Gérald Barré Learn how to find an available network port in .NET using the Socket class. This is useful for server applications, testing, and development tools that need to bind to ports without conflicts.

How to Find an Available Network Port for a server in .NET #dotnet www.meziantou.net/how-to-find-an-available...

Using Git insteadOf to Automatically Replace HTTPS URLs with SSH - Gérald Barré In this post, I describe how to use Git's insteadOf configuration to automatically rewrite HTTPS URLs to SSH URLs for seamless authentication.

Using Git insteadOf to Automatically Replace HTTPS URLs with SSH #git www.meziantou.net/using-git-insteadof-to-a...

Batch migrate .sln files to .slnx format across repositories - Gérald Barré Learn how to batch migrate .sln solution files to the new .slnx format across multiple repositories using automated tools.

Batch migrate .sln files to .slnx format across repositories #dotnet www.meziantou.net/batch-migrate-sln-files-...

Using Multiple Loopback Addresses for Socket Binding - Gérald Barré Learn how to use multiple loopback addresses beyond 127.0.0.1 for socket binding, allowing multiple services to run on the same port by using different addresses in the 127.0.0.0/8 range for testing and development.

Using Multiple Loopback Addresses for Socket Binding #dotnet www.meziantou.net/using-multiple-loopback-...

Git Worktree: Managing Multiple Working Directories - Gérald Barré Learn how to use Git worktree to manage multiple working directories from a single repository, enabling parallel development workflows.

Git Worktree: Managing Multiple Working Directories #git www.meziantou.net/git-worktree-managing-mu...

Removing allocations by reducing closure scopes using local variables - Gérald Barré In this post, I describe how to avoid allocations when using closures by scoping captured variables. It provides examples and demonstrates the compiler's code transformation.

Remind me of this post about closures and scope www.meziantou.net/reducing-all...

Accessing Windows Known Folders in C# with SHGetKnownFolderPath - Gérald Barré Learn how to access Windows Known Folders like Downloads and Desktop using SHGetKnownFolderPath API in C# when Environment.GetFolderPath is insufficient.

Accessing Windows Known Folders in C# with SHGetKnownFolderPath #dotnet www.meziantou.net/accessing-windows-known-...

No need to write it yourself. You can use `Microsoft.CodeAnalysis.BannedApiAnalyzers` with `T:System.Diagnostics.CodeAnalysis.ExcludeFromCodeCoverageAttribute`

SetWindowDisplayAffinity function (winuser.h) - Win32 apps Stores the display affinity setting in kernel mode on the hWnd associated with the window.

You need to call one win32 method to exclude your windows from Recall and screen capture. Web browsers aren't special kids.
learn.microsoft.com/en-us/window...

.NET example: www.meziantou.net/how-to-exclu...

How to Find Public Symbols That Can Be Internal Using Roslyn - Gérald Barré Learn how to use Roslyn to analyze your .NET solution and identify public symbols that are only used internally and can be safely changed to internal.

How to Find Public Symbols That Can Be Internal Using Roslyn #dotnet #roslyn www.meziantou.net/how-to-find-public-symbo...

How to Exclude Your Windows App from Screen Capture and Recall - Gérald Barré Learn how to prevent your Windows app from being captured by screen recording and screenshot tools using SetWindowDisplayAffinity.

How to Exclude Your Windows App from Screen Capture and Recall #dotnet #windows www.meziantou.net/how-to-exclude-your-wind...

Automatically Rerun Failed GitHub Actions Workflows - Gérald Barré This post explains how to automatically rerun failed GitHub Actions workflows using the workflow_run event and specific conditions.

Automatically Rerun Failed GitHub Actions Workflows #github www.meziantou.net/automatically-rerun-fail...